Updates to fix Watcom C/C++ 11.0 compiler warning problems. Now compiles

clean with this compiler. Hopefully I did this without breaking other
compilers.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9967 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/dynlib.cpp

@@ -363,8 +363,7 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
     if (node != NULL)
         return ((wxLibrary *)node->Data());
 #else // !OS/2
-	node = m_loaded.Find(name.GetData());
-    if ( node )
+    if ( (node = m_loaded.Find(name.GetData())) != NULL)
         return ((wxLibrary *)node->Data());
 #endif
     // If DLL shares data, this is necessary.