entry_data.type is unsigned, so print it with %u.

This should squelch a warning from VS Code Analyzer.

Change-Id: I69e528c3dfd851d287b1faebc1469cd700fa9ef5
Reviewed-on: https://code.wireshark.org/review/26402
Reviewed-by: Guy Harris <guy@alum.mit.edu>

mmdbresolve.c

@@ -146,7 +146,7 @@ main(int argc, char *argv[])
                                 fprintf(stdout, ": %f\n", entry_data.float_value);
                                 break;
                             default:
-                                fprintf(stdout, ": UNKNOWN (%d)\n", entry_data.type);
+                                fprintf(stdout, ": UNKNOWN (%u)\n", entry_data.type);
                         }
                     }
                 }