8230856: Java_java_net_NetworkInterface_getByName0 on unix misses...

8230856: Java_java_net_NetworkInterface_getByName0 on unix misses ReleaseStringUTFChars in early return
Reviewed-by: dfuchs, stuefe, vtewari

src/solaris/native/java/net/NetworkInterface.c

@@ -259,6 +259,7 @@ JNIEXPORT jobject JNICALL Java_java_net_NetworkInterface_getByName0
 
     ifs = enumInterfaces(env);
     if (ifs == NULL) {
+        (*env)->ReleaseStringUTFChars(env, name, name_utf);
         return NULL;
     }