Add missing prototype for mcount();


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@1210 4407c894-4637-0410-b4f5-ada5f102cad1
diff --git a/mingw-w64-crt/profile/mcount.c b/mingw-w64-crt/profile/mcount.c
index 4df6c57..c579afd 100644
--- a/mingw-w64-crt/profile/mcount.c
+++ b/mingw-w64-crt/profile/mcount.c
@@ -63,6 +63,7 @@
  */
 /* _mcount; may be static, inline, etc */
 _MCOUNT_DECL (size_t, size_t);
+void mcount ();
 
 _MCOUNT_DECL (size_t frompc, size_t selfpc)
 {