From 90bc168c8703a69dfef4a953da702bdf336c7546 Mon Sep 17 00:00:00 2001
From: Aric Stewart <aric@codeweavers.com>
Date: Tue, 7 Jun 2005 20:02:07 +0000
Subject: [PATCH] Correct a crash if the length buffer is NULL.

---
 dlls/msi/msi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index 82d92e7f774..c4ccd88c51d 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -971,11 +971,16 @@ INSTALLSTATE WINAPI MsiGetComponentPathA(LPCSTR szProduct, LPCSTR szComponent,
     }
 
     if( pcchBuf && *pcchBuf > 0 )
+    {
         lpwPathBuf = HeapAlloc( GetProcessHeap(), 0, *pcchBuf * sizeof(WCHAR));
+        incoming_len = *pcchBuf;
+    }
     else
+    {
         lpwPathBuf = NULL;
+        incoming_len = 0;
+    }
 
-    incoming_len = *pcchBuf;
     rc = MsiGetComponentPathW(szwProduct, szwComponent, lpwPathBuf, pcchBuf);
 
     HeapFree( GetProcessHeap(), 0, szwProduct);