Squashed '3rdparty/github/dlfcn-win32/' changes from 974b39c..61ad60f
Squashed '3rdparty/github/dlfcn-win32/' changes from 974b39c..61ad60f

61ad60f Merge pull request #69 from reborn2266/fix_mmleak
cea6563 fix memory leak in dlsym()
32be076 Merge pull request #68 from pali/master
70c5c20 Show "(null)" in error message when passed filname to dlopen() was NULL and error occurred

git-subtree-dir: 3rdparty/github/dlfcn-win32
git-subtree-split: 61ad60f591700cc083b8a310c020554a59374a0a

jddurand/c-tconv,jddurand/c-tconv,jddurand/c-tconv,jddurand/c-tconv