Fixup for r293885: Update external.cc testcase to include the forgotten stdlib.h.
Fixup for r293885: Update external.cc testcase to include the forgotten stdlib.h.



git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@295002 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt