[PATCH] mmsystem.dll16: check for NULL ptr in mmioRename (Coverity)

[Marcus Meissner]

Hi,

Add a missing NULL ptr check to the mmioRename16 wrapper.

Ciao, Marcus
---
 dlls/mmsystem.dll16/mmio16.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/dlls/mmsystem.dll16/mmio16.c b/dlls/mmsystem.dll16/mmio16.c
index d0e24bc..cc13583 100644
--- a/dlls/mmsystem.dll16/mmio16.c
+++ b/dlls/mmsystem.dll16/mmio16.c
@@ -631,7 +631,8 @@ MMRESULT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
         inst = TRUE;
     }
     memset(&mmioinfo, 0, sizeof(mmioinfo));
-    mmioinfo.fccIOProc = lpmmioinfo->fccIOProc;
+    if (lpmmioinfo)
+        mmioinfo.fccIOProc = lpmmioinfo->fccIOProc;
     ret = mmioRenameA(szFileName, szNewFileName, &mmioinfo, dwRenameFlags);
     if (inst) {
         mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_REMOVEPROC);
-- 
1.5.6