Fix warning

http-response-bodies.c

@@ -78,7 +78,7 @@ int main(int argc, char* argv[]) {
 checkstate:
 		DEBUG_PRINTF("Have %zu bytes of buffer (at %p)\n", n, (void*)bufp);
 		DEBUG_PRINTF("Beginning of buffer: ");
-		for (int i = 0; i < (n > 64 ? 64 : n); ++i) DEBUG_PRINTF(isprint(*(bufp + i)) ? "%c" : "\\x%02x", *(bufp + i) & 0xFF);
+		for (unsigned int i = 0; i < (n > 64 ? 64 : n); ++i) DEBUG_PRINTF(isprint(*(bufp + i)) ? "%c" : "\\x%02x", *(bufp + i) & 0xFF);
 		DEBUG_PRINTF("\n");
 		if (n == 0) {
 			break;