Properly check for a zero-valued floating-point viewport argument

Source/core/dom/ViewportArguments.cpp

Index: Source/core/dom/ViewportArguments.cpp
diff --git a/Source/core/dom/ViewportArguments.cpp b/Source/core/dom/ViewportArguments.cpp
index 48d56e41ad064ce4f22a113c22d8898b6c323997..0808c89c448b2f9f65ba3c1acabc172a87d4b4b8 100644
--- a/Source/core/dom/ViewportArguments.cpp
+++ b/Source/core/dom/ViewportArguments.cpp
@@ -235,7 +235,7 @@ static Length findSizeValue(const String& keyString, const String& valueString,
     if (value < 0)
         return Length(); // auto
 
-    if (!static_cast<int>(value) && document->page() && document->page()->settings().viewportMetaZeroValuesQuirk()) {
+    if (!value && document->page() && document->page()->settings().viewportMetaZeroValuesQuirk()) {
         if (keyString == "width")
             return Length(100, ViewportPercentageWidth);
         if (keyString == "height")
@@ -270,7 +270,7 @@ static float findScaleValue(const String& keyString, const String& valueString,
     if (value > 10.0)
         reportViewportWarning(document, MaximumScaleTooLargeError, String(), String());
 
-    if (!static_cast<int>(value) && document->page() && document->page()->settings().viewportMetaZeroValuesQuirk() && (keyString == "minimum-scale" || keyString == "maximum-scale"))
+    if (!value && document->page() && document->page()->settings().viewportMetaZeroValuesQuirk() && (keyString == "minimum-scale" || keyString == "maximum-scale"))
         return ViewportArguments::ValueAuto;
 
     return clampScaleValue(value);