audiohook: Use manipulated frame instead of dropping it.

Previous changes to sample rate support in audiohooks accidentally
removed code responsible for allowing the manipulate audiohooks
to work. Without this code the manipulated frame would be dropped
and not used. This change restores it.

ASTERISK-25253 #close

Change-Id: I3ff50664cd82faac8941f976fcdcb3918a50fe13

main/audiohook.c

@@ -1009,13 +1009,16 @@ static struct ast_frame *audio_audiohook_write_list(struct ast_channel *chan, st
 			audiohook_list_set_hook_rate(audiohook_list, audiohook, &internal_sample_rate);
 			/*
 			 * Feed in frame to manipulation.
-			 *
-			 * XXX FAILURES ARE IGNORED XXX
-			 * If the manipulation fails then the frame will be returned in its original state.
-			 * Since there are potentially more manipulator callbacks in the list, no action should
-			 * be taken here to exit early.
 			 */
-			audiohook->manipulate_callback(audiohook, chan, middle_frame, direction);
+			if (!audiohook->manipulate_callback(audiohook, chan, middle_frame, direction)) {
+				/*
+				 * XXX FAILURES ARE IGNORED XXX
+				 * If the manipulation fails then the frame will be returned in its original state.
+				 * Since there are potentially more manipulator callbacks in the list, no action should
+				 * be taken here to exit early.
+				 */
+				middle_frame_manipulated = 1;
+			}
 			ast_audiohook_unlock(audiohook);
 		}
 		AST_LIST_TRAVERSE_SAFE_END;