Explicitly compare FontVariant to enumerators.

Source/core/rendering/RenderText.cpp

Index: Source/core/rendering/RenderText.cpp
diff --git a/Source/core/rendering/RenderText.cpp b/Source/core/rendering/RenderText.cpp
index 82f3b2adc4c5f52dfc8bb0ede5fcc24ef6255d43..64fa967bd38075be6474e807f7874fe268ec73f2 100644
--- a/Source/core/rendering/RenderText.cpp
+++ b/Source/core/rendering/RenderText.cpp
@@ -713,7 +713,7 @@ ALWAYS_INLINE float RenderText::widthFromCache(const Font& f, int start, int len
             return combineText->combinedTextWidth(f);
     }
 
-    if (f.isFixedPitch() && !f.fontDescription().variant() && m_isAllASCII && (!glyphOverflow || !glyphOverflow->computeBounds)) {
+    if (f.isFixedPitch() && f.fontDescription().variant() == FontVariantNormal && m_isAllASCII && (!glyphOverflow || !glyphOverflow->computeBounds)) {
         float monospaceCharacterWidth = f.spaceWidth();
         float w = 0;
         bool isSpace;