Fix FP leakNoVarFunctionCall (#5309)

Author: chrchr-github

lib/checkmemoryleak.cpp

@@ -1004,7 +1004,8 @@ void CheckMemoryLeakNoVar::checkForUnreleasedInputArgument(const Scope *scope)
                 const Variable* argvar = tok->function()->getArgumentVar(argnr);
                 if (!argvar || !argvar->valueType())
                     continue;
-                if (argvar->valueType()->typeSize(mSettings->platform, /*p*/ true) >= mSettings->platform.sizeof_pointer)
+                const MathLib::bigint argSize = argvar->valueType()->typeSize(mSettings->platform, /*p*/ true);
+                if (argSize <= 0 || argSize >= mSettings->platform.sizeof_pointer)
                     continue;
             }
             functionCallLeak(arg, arg->str(), functionName);

test/testmemleak.cpp

@@ -2493,6 +2493,13 @@ class TestMemleakNoVar : public TestFixture {
               "    g(1, new int());\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("void f(T t);\n"
+              "struct U {};\n"
+              "void g() {\n"
+              "    f(new U());\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void missingAssignment() {