Fix c_simple_example

examples/c_simple_example.c

@@ -29,15 +29,17 @@ int main(int argc, char **argv) {
   rocksdb_writeoptions_t *writeoptions = rocksdb_writeoptions_create();
   const char key[] = "key";
   const char *value = "value";
-	rocksdb_put(db, writeoptions, key, strlen (key), value,	\
-			strlen (value) + 1, &err);
+  rocksdb_put(db, writeoptions, key, strlen(key), value, strlen(value) + 1,
+              &err);
   assert(!err);
   // Get value
   rocksdb_readoptions_t *readoptions = rocksdb_readoptions_create();
   size_t len;
-	value = rocksdb_get(db, readoptions, key, strlen (key), &len, &err);
+  char *returned_value =
+      rocksdb_get(db, readoptions, key, strlen(key), &len, &err);
   assert(!err);
-	assert(strcmp(value, "value") == 0);
+  assert(strcmp(returned_value, "value") == 0);
+  free(returned_value);
 
   // cleanup
   rocksdb_writeoptions_destroy(writeoptions);