Bring patch correction over from gcc repository.

include/md5.h

@@ -21,10 +21,6 @@
 #ifndef _MD5_H
 #define _MD5_H 1
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <stdio.h>
 
 #if defined HAVE_LIMITS_H || _LIBC
@@ -76,6 +72,10 @@ typedef uintptr_t md5_uintptr;
 typedef unsigned long int md5_uintptr;
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Structure to save state of computation between the single steps.  */
 struct md5_ctx
 {