MSVC doesn't like the mixing of declarations and statements in a .c file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153549 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/runtime/libprofile/GCDAProfiling.c b/runtime/libprofile/GCDAProfiling.c
index 712dba0..233a2f3 100644
--- a/runtime/libprofile/GCDAProfiling.c
+++ b/runtime/libprofile/GCDAProfiling.c
@@ -114,8 +114,9 @@
   output_file = fopen(filename, "wb");
 
   if (!output_file) {
+    const char *cptr = 0;
     filename[0] = '\0';  /* The size of filename should be big enough. */
-    char *cptr = strrchr(orig_filename, '/');
+    cptr = strrchr(orig_filename, '/');
     strcat(filename, cptr ? cptr + 1 : orig_filename);
     output_file = fopen(filename, "wb");