fix memory leaks with custom encoder/decoder

Change-Id: I4378fffb66ea5facc06aa16cd5383a5c2d301005
Reviewed-on: http://review.couchbase.org/c/php-couchbase/+/163453
Tested-by: Build Bot <[email protected]>
Reviewed-by: Sergey Avseyev <[email protected]>

Author: avsej

src/couchbase/bucket/get.c

@@ -134,6 +134,7 @@ PHP_METHOD(GetOptions, decoder)
     }
 
     pcbc_update_property(pcbc_get_options_ce, getThis(), ("decoder"), arg);
+    zval_ptr_dtor(arg);
     RETURN_ZVAL(getThis(), 1, 0);
 }
 

src/couchbase/bucket/store.c

@@ -134,6 +134,7 @@ PHP_METHOD(InsertOptions, encoder)
     }
 
     pcbc_update_property(pcbc_insert_options_ce, getThis(), ("encoder"), arg);
+    zval_ptr_dtor(arg);
     RETURN_ZVAL(getThis(), 1, 0);
 }
 
@@ -316,6 +317,7 @@ PHP_METHOD(UpsertOptions, encoder)
     }
 
     pcbc_update_property(pcbc_upsert_options_ce, getThis(), ("encoder"), arg);
+    zval_ptr_dtor(arg);
     RETURN_ZVAL(getThis(), 1, 0);
 }
 
@@ -536,6 +538,7 @@ PHP_METHOD(ReplaceOptions, encoder)
     }
 
     pcbc_update_property(pcbc_replace_options_ce, getThis(), ("encoder"), arg);
+    zval_ptr_dtor(arg);
     RETURN_ZVAL(getThis(), 1, 0);
 }