Add casts to silence complaints from gcc-14

--- libdbi-drivers-0.9.0/tests/cgreen/src/constraint.c.~1~	Mon Jul 19 14:49:44 2010
+++ libdbi-drivers-0.9.0/tests/cgreen/src/constraint.c	Wed Apr 30 17:04:33 2025
@@ -101,7 +101,7 @@
 
     constraint->parameter = parameter;
     constraint->compare = &compare_using_matcher;
-    constraint->test = &test_with_matcher;
+    constraint->test = (void (*)(Constraint *, const char *, intptr_t, const char *, int, TestReporter *))&test_with_matcher;
     constraint->name = matcher_name;
     constraint->expected = (intptr_t)matcher_function;
     return constraint;
@@ -164,8 +164,8 @@
 }
 
 static int compare_using_matcher(Constraint *constraint, intptr_t actual) {
-	int (*matches)(const void*) = constraint->expected;
-    return matches(actual);
+	int (*matches)(const void*) = (int (*)(const void*))(constraint->expected);
+	return matches((const void *)actual);
 }
 
 static void test_with_matcher(Constraint *constraint, const char *function, const char* matcher_name, intptr_t matcher_function, const char *test_file, int test_line, TestReporter *reporter) {