CPP: Correct the tests.

Author: geoffw0

cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Linux_signed_chars/a.c

@@ -9,8 +9,8 @@ void myMultiplyDefinedPrintf2(const char *format, const char *extraArg, ...);
 
 void test_custom_printf1()
 {
-  myMultiplyDefinedPrintf("%i", "%s", 1); // GOOD
-  myMultiplyDefinedPrintf("%i", "%s", 1.0f); // BAD [NOT DETECTED]
-  myMultiplyDefinedPrintf2("%i", "%s", 1); // GOOD (we can't tell which definition is correct so we have to assume this is OK)
-  myMultiplyDefinedPrintf2("%i", "%s", 1.0f); // GOOD (we can't tell which definition is correct so we have to assume this is OK)
+  myMultiplyDefinedPrintf("%i", "%f", 1); // GOOD
+  myMultiplyDefinedPrintf("%i", "%f", 1.0f); // BAD [NOT DETECTED]
+  myMultiplyDefinedPrintf2("%i", "%f", 1); // GOOD (we can't tell which definition is correct so we have to assume this is OK)
+  myMultiplyDefinedPrintf2("%i", "%f", 1.0f); // GOOD (we can't tell which definition is correct so we have to assume this is OK)
 }