--- a/xpcom/io/nsLocalFileUnix.cpp
+++ b/xpcom/io/nsLocalFileUnix.cpp
@@ -1431,20 +1431,18 @@ nsLocalFile::GetParent(nsIFile** aParent
 
   // if '/' we are at the top of the volume, return null
   if (mPath.EqualsLiteral("/")) {
     return  NS_OK;
   }
 
   // <brendan, after jband> I promise to play nice
   char* buffer = mPath.BeginWriting();
-  char* slashp = buffer;
-
   // find the last significant slash in buffer
-  slashp = strrchr(buffer, '/');
+  char* slashp = strrchr(buffer, '/');
   NS_ASSERTION(slashp, "non-canonical path?");
   if (!slashp) {
     return NS_ERROR_FILE_INVALID_PATH;
   }
 
   // for the case where we are at '/'
   if (slashp == buffer) {
     slashp++;