Fix C API

Author: igorcanadi

db/c.cc

@@ -595,7 +595,7 @@ void rocksdb_options_set_comparator(
   opt->rep.comparator = cmp;
 }
 
-void rocksdb_options_set_merger_operator(
+void rocksdb_options_set_merge_operator(
     rocksdb_options_t* opt,
     rocksdb_mergeoperator_t* merge_operator) {
   opt->rep.merge_operator = std::shared_ptr<MergeOperator>(merge_operator);

db/c_test.c

@@ -416,7 +416,7 @@ int main(int argc, char** argv) {
     // Create new database
     rocksdb_close(db);
     rocksdb_destroy_db(options, dbname, &err);
-    rocksdb_options_set_merger_operator(options, merge_operator);
+    rocksdb_options_set_merge_operator(options, merge_operator);
     db = rocksdb_open(options, dbname, &err);
     CheckNoError(err);
     rocksdb_put(db, woptions, "foo", 3, "foovalue", 8, &err);
@@ -431,8 +431,6 @@ int main(int argc, char** argv) {
     CheckNoError(err);
     CheckGet(db, roptions, "bar", "fake");
 
-    rocksdb_options_set_merger_operator(options, NULL);
-    rocksdb_mergeoperator_destroy(merge_operator);
   }
 
   StartPhase("cleanup");

include/rocksdb/c.h

@@ -216,9 +216,8 @@ extern void rocksdb_options_destroy(rocksdb_options_t*);
 extern void rocksdb_options_set_comparator(
     rocksdb_options_t*,
     rocksdb_comparator_t*);
-extern void rocksdb_options_set_merger_operator(
-    rocksdb_options_t*,
-    rocksdb_mergeoperator_t*);
+extern void rocksdb_options_set_merge_operator(rocksdb_options_t*,
+                                               rocksdb_mergeoperator_t*);
 extern void rocksdb_options_set_compression_per_level(
   rocksdb_options_t* opt,
   int* level_values,