diff --git a/mozilla/xpcom/base/nsIVersionComparator.idl b/mozilla/xpcom/base/nsIVersionComparator.idl
index cf9c53db1cf..fa0f6952a22 100755
--- a/mozilla/xpcom/base/nsIVersionComparator.idl
+++ b/mozilla/xpcom/base/nsIVersionComparator.idl
@@ -72,7 +72,7 @@ interface nsIVersionComparator : nsISupports
    * @param   B   The second version
    * @returns < 0 if A < B
    *          = 0 if A == B
-   *          > 0 if B > A
+   *          > 0 if A > B
    */
   long compare(in ACString A, in ACString B);
 };
diff --git a/mozilla/xpcom/glue/nsVersionComparator.cpp b/mozilla/xpcom/glue/nsVersionComparator.cpp
index 447440a939b..81429ec0dab 100755
--- a/mozilla/xpcom/glue/nsVersionComparator.cpp
+++ b/mozilla/xpcom/glue/nsVersionComparator.cpp
@@ -62,6 +62,7 @@ ParseVP(char *part, VersionPart &result)
   char *dot;
 
   if (!part) {
+    result.numA = 0;
     result.strB = nsnull;
     result.strBlen = 0;
     result.numC = 0;