Checkin two tests that were lying around.

Author: Pascal Beyer

tests/error/should_report_undeclared_identifiers_in_structures.c

@@ -0,0 +1,10 @@
+// fail "Error at 'type'"
+
+// This should fail because 'type' is undeclared, but currently fails because 'structure' is undeclared.
+// This is now fixed, so here is a regression test :)
+
+struct structure{ type a; };
+struct structure arst;
+
+int main(){}
+

tests/error/u64_values_in_static_if.c

@@ -0,0 +1,11 @@
+// fail "This should error"
+
+#if 18446744073709551615 > 123
+#error This should error
+#endif
+
+int main(){
+    
+}
+
+