Some compilers (HP-UX) don't like it when the file doesn't end in a newline.

docshell/base/nsDSURIContentListener.cpp

@@ -224,4 +224,4 @@ void nsDSURIContentListener::DocShell(nsDocShell* aDocShell)
 nsDocShell* nsDSURIContentListener::DocShell()
 {
    return mDocShell;
-}
+}