Fix repeated warning for file uploads limit exceeding

Author: bukka

main/rfc1867.c

@@ -911,7 +911,10 @@ SAPI_API SAPI_POST_HANDLER_FUNC(rfc1867_post_handler) /* {{{ */
 				skip_upload = 1;
 			} else if (upload_cnt <= 0) {
 				skip_upload = 1;
-				sapi_module.sapi_error(E_WARNING, "Maximum number of allowable file uploads has been exceeded");
+				if (upload_cnt == 0) {
+					--upload_cnt;
+					sapi_module.sapi_error(E_WARNING, "Maximum number of allowable file uploads has been exceeded");
+				}
 			}
 
 			/* Return with an error if the posted data is garbled */