Update testleakautovar.cpp

Author: chrchr-github

test/testleakautovar.cpp

@@ -644,9 +644,9 @@ class TestLeakAutoVar : public TestFixture {
 
         check("void f(const char* n) {\n" // #12724
               "    FILE* fp = fopen(n, \"r\");\n"
-              "bool b = (fp == NULL);\n"
-              "if (b)\n"
-              "    return;\n"
+              "    bool b = (fp == NULL);\n"
+              "    if (b)\n"
+              "        return;\n"
               "}\n", dinit(CheckOptions, $.cpp = true));
         ASSERT_EQUALS("[test.cpp:6:1]: (error) Resource leak: fp [resourceLeak]\n", errout_str());
     }