Memory leak: Better handling of 'if (0 != p)'

CheckMemoryLeak.cpp

@@ -357,7 +357,8 @@ TOKEN *CheckMemoryLeakClass::getcode(const TOKEN *tok, std::list<const TOKEN *>
 
         // if else switch
         if ( Match(tok, "if ( %var1% )", varnames) ||
-             Match(tok, "if ( %var1% != 0 )", varnames)   )
+             Match(tok, "if ( %var1% != 0 )", varnames) ||
+             Match(tok, "if ( 0 != %var1% )", varnames)  )
         {
             addtoken("if(var)");
             tok = Tokenizer::gettok(tok, 3);   // Make sure the "use" will not be added

testmemleak.cpp

@@ -417,7 +417,7 @@ private:
         check( "void f()\n"
                "{\n"
                "    char *s = new char[100];\n"
-               "    if (s != NULL)\n"
+               "    if (0 != s)\n"
                "        foo(s);\n"
                "}\n" );
         ASSERT_EQUALS( std::string(""), errout.str() );