diff --git a/mozilla/content/html/style/src/nsCSSStyleSheet.cpp b/mozilla/content/html/style/src/nsCSSStyleSheet.cpp
index 29b5e454300..a63338ec6e7 100644
--- a/mozilla/content/html/style/src/nsCSSStyleSheet.cpp
+++ b/mozilla/content/html/style/src/nsCSSStyleSheet.cpp
@@ -1485,7 +1485,10 @@ static PRBool SelectorMatches(nsIPresContext* aPresContext,
 
                     char *absUrlStr = nsnull;
                     char *urlSpec = href.ToNewCString();
-                    if (!urlSpec) return NS_ERROR_OUT_OF_MEMORY;
+                    if (!urlSpec) {
+                      NS_RELEASE(baseUri);
+                      return PR_FALSE;
+                    }
                     rv = service->MakeAbsolute(urlSpec, baseUri, &absUrlStr);
                     nsCRT::free(urlSpec);
                     NS_RELEASE(baseUri);
diff --git a/mozilla/layout/html/style/src/nsCSSStyleSheet.cpp b/mozilla/layout/html/style/src/nsCSSStyleSheet.cpp
index 29b5e454300..a63338ec6e7 100644
--- a/mozilla/layout/html/style/src/nsCSSStyleSheet.cpp
+++ b/mozilla/layout/html/style/src/nsCSSStyleSheet.cpp
@@ -1485,7 +1485,10 @@ static PRBool SelectorMatches(nsIPresContext* aPresContext,
 
                     char *absUrlStr = nsnull;
                     char *urlSpec = href.ToNewCString();
-                    if (!urlSpec) return NS_ERROR_OUT_OF_MEMORY;
+                    if (!urlSpec) {
+                      NS_RELEASE(baseUri);
+                      return PR_FALSE;
+                    }
                     rv = service->MakeAbsolute(urlSpec, baseUri, &absUrlStr);
                     nsCRT::free(urlSpec);
                     NS_RELEASE(baseUri);
diff --git a/mozilla/layout/style/nsCSSStyleSheet.cpp b/mozilla/layout/style/nsCSSStyleSheet.cpp
index 29b5e454300..a63338ec6e7 100644
--- a/mozilla/layout/style/nsCSSStyleSheet.cpp
+++ b/mozilla/layout/style/nsCSSStyleSheet.cpp
@@ -1485,7 +1485,10 @@ static PRBool SelectorMatches(nsIPresContext* aPresContext,
 
                     char *absUrlStr = nsnull;
                     char *urlSpec = href.ToNewCString();
-                    if (!urlSpec) return NS_ERROR_OUT_OF_MEMORY;
+                    if (!urlSpec) {
+                      NS_RELEASE(baseUri);
+                      return PR_FALSE;
+                    }
                     rv = service->MakeAbsolute(urlSpec, baseUri, &absUrlStr);
                     nsCRT::free(urlSpec);
                     NS_RELEASE(baseUri);