coverity#1348471 related Unitialized scalar field

add mnParentFontSize to same places that use mnFontSize

Change-Id: I4cf1e7439361b65de0f12028b819a4d7c8124ca2

filter/source/svg/gfxtypes.hxx

@@ -244,6 +244,7 @@ inline bool operator==(const State& rLHS, const State& rRHS )
         rLHS.mbIsText==rRHS.mbIsText &&
         rLHS.maFontFamily==rRHS.maFontFamily &&
         rLHS.mnFontSize==rRHS.mnFontSize &&
+        rLHS.mnParentFontSize==rRHS.mnParentFontSize &&
         rLHS.maFontStyle==rRHS.maFontStyle &&
         rLHS.maFontVariant==rRHS.maFontVariant &&
         rLHS.mnFontWeight==rRHS.mnFontWeight &&
@@ -297,6 +298,7 @@ namespace std
                 ^  size_t(rState.mbIsText)
                 ^  size_t(rState.maFontFamily.hashCode())
                 ^  std::hash<double>()(rState.mnFontSize)
+                ^  std::hash<double>()(rState.mnParentFontSize)
                 ^  size_t(rState.maFontStyle.hashCode())
                 ^  size_t(rState.maFontVariant.hashCode())
                 ^  std::hash<double>()(rState.mnFontWeight)