Assume UTF-8–encoded symbol name

Followup to 00245a92be94feea4df581fe4d4cc38156f453b4 (#1107).

1 files changed, 1 insertions, 1 deletions

diff --git a/platform/ios/MGLMapView.mm b/platform/ios/MGLMapView.mm
index e323141b25..30edd87977 100644
--- a/platform/ios/MGLMapView.mm
+++ b/platform/ios/MGLMapView.mm
@@ -1800,7 +1800,7 @@ CLLocationCoordinate2D latLngToCoordinate(mbgl::LatLng latLng)
         {
             symbol = [self.delegate mapView:self symbolNameForAnnotation:annotation];
         }
-        std::string symbolName([symbol cStringUsingEncoding:[NSString defaultCStringEncoding]]);
+        std::string symbolName([symbol UTF8String]);
 
         // determine anchor point based on symbol
         CGPoint calloutAnchorPoint = [self convertCoordinate:annotation.coordinate toPointToView:self];