Linux doubles line gap when no VDMX table present

Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp

Index: Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp
diff --git a/Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp b/Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp
index 5acac0930622db90b1c3b7806dd12fcaa399298e..56eef1e333893ea0730ecae6e0e0af779910ceba 100644
--- a/Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp
+++ b/Source/core/platform/graphics/skia/SimpleFontDataSkia.cpp
@@ -89,9 +89,8 @@ void SimpleFontData::platformInit()
         ascent = vdmxAscent;
         descent = -vdmxDescent;
     } else {
-        SkScalar height = -metrics.fAscent + metrics.fDescent + metrics.fLeading;
         ascent = SkScalarRound(-metrics.fAscent);
-        descent = SkScalarRound(height) - ascent;
+        descent = SkScalarRound(metrics.fDescent);
 #if OS(LINUX) || OS(ANDROID)
         // When subpixel positioning is enabled, if the descent is rounded down, the descent part
         // of the glyph may be truncated when displayed in a 'overflow: hidden' container.