Silence a compiler warning about unhandled enum in switch

The value is impossible due to the construct, but the compiler
complains nonetheless. So just add a value handled in the switch and a
comment letting the reader know that it can't happen.

Reviewed-By: Samuel Rødal

1 files changed, 4 insertions, 0 deletions

diff --git a/src/gui/painting/qtextureglyphcache.cpp b/src/gui/painting/qtextureglyphcache.cpp
index 4bb4759b81..fdba9c99ea 100644
--- a/src/gui/painting/qtextureglyphcache.cpp
+++ b/src/gui/painting/qtextureglyphcache.cpp
@@ -308,6 +308,10 @@ QImage QTextureGlyphCache::textureMapForGlyph(glyph_t g, QFixed subPixelPosition
             format = QFontEngineFT::Format_Mono;
             imageFormat = QImage::Format_Mono;
             break;
+        case Raster_RGBMask:
+            // impossible condition (see the if-clause above)
+            // this option is here only to silence a compiler warning
+            break;
         };
 
         QFontEngineFT *ft = static_cast<QFontEngineFT*> (m_current_fontengine);