Bug#29125 Windows Server X64: so many compiler warnings

- Remove bothersome warning messages.  This change focuses on the warnings 
that are covered by the ignore file: support-files/compiler_warnings.supp.
- Strings are guaranteed to be max uint in length

1 files changed, 1 insertions, 1 deletions

diff --git a/mysys/base64.c b/mysys/base64.c
index 47b93942784..a471e846b97 100644
--- a/mysys/base64.c
+++ b/mysys/base64.c
@@ -193,7 +193,7 @@ base64_decode(const char *src, size_t size, void *dst)
   {
     return -1;
   }
-  return d - dst_base;
+  return (int) (d - dst_base);
 }