Tokenizer: Add testcase for 'delete a, a=0;'

test/testsimplifytokens.cpp

@@ -1844,6 +1844,14 @@ private:
             ASSERT_EQUALS("void foo ( ) { delete a ; a = 0 ; }", tok(code));
         }
 
+        {
+            const char code[] = "void foo()\n"
+                                "{\n"
+                                "    if( x ) delete a, a = 0;\n"
+                                "}\n";
+            ASSERT_EQUALS("void foo ( ) { if ( x ) { delete a ; a = 0 ; } }", tok(code));
+        }
+
         {
             const char code[] = "void f()\n"
                                 "{\n"