test: make tuple_uint32_overflow tap-compatible

Part of #7618

NO_DOC=internal
NO_CHANGELOG=internal

test/unit/tuple_uint32_overflow.c

 #include "tuple.h"
-#include "unit.h"
 #include <stdio.h>
 #include <memory.h>
 #include <fiber.h>
 
+#define UNIT_TAP_COMPATIBLE 1
+#include "unit.h"
 
 static char data[500];
 
@@ -61,6 +62,7 @@ tuple_field_u32_test()
 int
 main()
 {
+	plan(2);
 	memory_init();
 	fiber_init(fiber_c_invoke);
 	tuple_init(NULL);
@@ -73,5 +75,5 @@ main()
 	fiber_free();
 	memory_free();
 
-	return 0;
+	return check_plan();
 }

test/unit/tuple_uint32_overflow.result

-	*** tuple_next_u32_test ***
-1..2
-ok 1 - can read next uint32_t
-ok 2 - can't read next uint64_t
-	*** tuple_next_u32_test: done ***
-	*** tuple_field_u32_test ***
-1..2
-ok 1 - can read uint32_t
-ok 2 - can't read uint64_t
-	*** tuple_field_u32_test: done ***