ijar: fix mismatched-tags warnings
ijar: fix mismatched-tags warnings

This patch fixes the following warnings:

third_party/ijar/mapped_file_unix.cc:31:1: warning:
'MappedInputFileImpl' defined as a struct here but previously declared
as a class [-Wmismatched-tags]
struct MappedInputFileImpl {
        ^
./third_party/ijar/mapped_file.h:22:1: note: did you mean struct here?
class MappedInputFileImpl;

third_party/ijar/mapped_file_unix.cc:88:1: warning:
'MappedOutputFileImpl' defined as a struct here but previously declared
as a class [-Wmismatched-tags]
struct MappedOutputFileImpl {
                        ^
./third_party/ijar/mapped_file.h:23:1: note: did you mean struct here?
class MappedOutputFileImpl;

--
Change-Id: Ie8269c0cfec41b4a1ddcdc9a9cd155ecac4b01d8
Reviewed-on: https://bazel-review.googlesource.com/#/c/3101
MOS_MIGRATED_REVID=118761176

mbrukman/bazel,zhexuany/bazel,kchodorow/bazel-1,kchodorow/bazel-1,aehlig/bazel,bazelbuild/bazel,meteorcloudy/bazel,anupcshan/bazel,cushon/bazel,mikelikespie/bazel,aehlig/bazel,mikelalcon/bazel,mrdomino/bazel,Asana/bazel,variac/bazel,mbrukman/bazel,whuwxl/bazel,LuminateWireless/bazel,juhalindfors/bazel-patches,Asana/bazel,cushon/bazel,spxtr/bazel,dslomov/bazel,aehlig/bazel,davidzchen/bazel,werkt/bazel,mrdomino/bazel,LuminateWireless/bazel,meteorcloudy/bazel,davidzchen/bazel,hermione521/bazel,whuwxl/bazel,anupcshan/bazel,akira-baruah/bazel,UrbanCompass/bazel,meteorcloudy/bazel,perezd/bazel,ButterflyNetwork/bazel,mikelikespie/bazel,werkt/bazel,perezd/bazel,akira-baruah/bazel,abergmeier-dsfishlabs/bazel,ButterflyNetwork/bazel,damienmg/bazel,bazelbuild/bazel,cushon/bazel,werkt/bazel,akira-baruah/bazel,juhalindfors/bazel-patches,ulfjack/bazel,snnn/bazel,zhexuany/bazel,aehlig/bazel,werkt/bazel,katre/bazel,davidzchen/bazel,meteorcloudy/bazel,kchodorow/bazel,mrdomino/bazel,werkt/bazel,dropbox/bazel,mikelalcon/bazel,iamthearm/bazel,mikelalcon/bazel,snnn/bazel,dropbox/bazel,mikelalcon/bazel,katre/bazel,safarmer/bazel,juhalindfors/bazel-patches,dslomov/bazel-windows,perezd/bazel,twitter-forks/bazel,twitter-forks/bazel,UrbanCompass/bazel,anupcshan/bazel,kchodorow/bazel-1,snnn/bazel,UrbanCompass/bazel,zhexuany/bazel,ButterflyNetwork/bazel,snnn/bazel,LuminateWireless/bazel,mikelikespie/bazel,akira-baruah/bazel,safarmer/bazel,ulfjack/bazel,Asana/bazel,twitter-forks/bazel,aehlig/bazel,anupcshan/bazel,kchodorow/bazel,hermione521/bazel,dslomov/bazel-windows,dslomov/bazel,ulfjack/bazel,damienmg/bazel,ButterflyNetwork/bazel,safarmer/bazel,kchodorow/bazel-1,damienmg/bazel,ButterflyNetwork/bazel,zhexuany/bazel,LuminateWireless/bazel,davidzchen/bazel,anupcshan/bazel,davidzchen/bazel,Asana/bazel,mbrukman/bazel,cushon/bazel,dropbox/bazel,mikelalcon/bazel,dslomov/bazel,iamthearm/bazel,kchodorow/bazel,juhalindfors/bazel-patches,abergmeier-dsfishlabs/bazel,variac/bazel,bazelbuild/bazel,katre/bazel,hermione521/bazel,cushon/bazel,ulfjack/bazel,dslomov/bazel-windows,Asana/bazel,LuminateWireless/bazel,mikelikespie/bazel,dslomov/bazel,mbrukman/bazel,iamthearm/bazel,meteorcloudy/bazel,mikelikespie/bazel,cushon/bazel,juhalindfors/bazel-patches,damienmg/bazel,twitter-forks/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,spxtr/bazel,whuwxl/bazel,akira-baruah/bazel,safarmer/bazel,twitter-forks/bazel,dslomov/bazel,mrdomino/bazel,kchodorow/bazel,perezd/bazel,mbrukman/bazel,kchodorow/bazel,davidzchen/bazel,dslomov/bazel-windows,damienmg/bazel,hermione521/bazel,whuwxl/bazel,aehlig/bazel,dropbox/bazel,mrdomino/bazel,variac/bazel,variac/bazel,abergmeier-dsfishlabs/bazel,kchodorow/bazel-1,variac/bazel,perezd/bazel,dslomov/bazel-windows,katre/bazel,kchodorow/bazel,meteorcloudy/bazel,snnn/bazel,mikelikespie/bazel,spxtr/bazel,spxtr/bazel,bazelbuild/bazel,mrdomino/bazel,perezd/bazel,dslomov/bazel,bazelbuild/bazel,iamthearm/bazel,abergmeier-dsfishlabs/bazel,damienmg/bazel,iamthearm/bazel,ulfjack/bazel,anupcshan/bazel,dslomov/bazel,dslomov/bazel-windows,akira-baruah/bazel,hermione521/bazel,ulfjack/bazel,iamthearm/bazel,werkt/bazel,mikelalcon/bazel,kchodorow/bazel-1,spxtr/bazel,UrbanCompass/bazel,katre/bazel,perezd/bazel,twitter-forks/bazel,hermione521/bazel,abergmeier-dsfishlabs/bazel,LuminateWireless/bazel,Asana/bazel,whuwxl/bazel,dropbox/bazel,safarmer/bazel,spxtr/bazel,juhalindfors/bazel-patches,variac/bazel,zhexuany/bazel,spxtr/bazel,whuwxl/bazel,zhexuany/bazel,safarmer/bazel,davidzchen/bazel,UrbanCompass/bazel,meteorcloudy/bazel,abergmeier-dsfishlabs/bazel,damienmg/bazel,ulfjack/bazel,snnn/bazel,mbrukman/bazel,kchodorow/bazel,juhalindfors/bazel-patches,katre/bazel,variac/bazel,twitter-forks/bazel,Asana/bazel,aehlig/bazel,snnn/bazel,dropbox/bazel,UrbanCompass/bazel