Compiler warnings


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@734 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/jdhuff.c b/jdhuff.c
index c2b38a9..f822dba 100644
--- a/jdhuff.c
+++ b/jdhuff.c
@@ -758,7 +758,7 @@
     usefast = 0;
   }
 
-  if (cinfo->src->bytes_in_buffer < BUFSIZE * cinfo->blocks_in_MCU
+  if (cinfo->src->bytes_in_buffer < BUFSIZE * (size_t)cinfo->blocks_in_MCU
     || cinfo->unread_marker != 0)
     usefast = 0;