Clear mutable inline style when it is empty.

Source/core/editing/RemoveCSSPropertyCommand.cpp

Index: Source/core/editing/RemoveCSSPropertyCommand.cpp
diff --git a/Source/core/editing/RemoveCSSPropertyCommand.cpp b/Source/core/editing/RemoveCSSPropertyCommand.cpp
index 6daa8410d93f0426dfa1a4951a6f3949d513f31c..6e80d60233206abf877f6bc8f87f2d2b0fbfc1f2 100644
--- a/Source/core/editing/RemoveCSSPropertyCommand.cpp
+++ b/Source/core/editing/RemoveCSSPropertyCommand.cpp
@@ -50,6 +50,10 @@ RemoveCSSPropertyCommand::~RemoveCSSPropertyCommand()
 void RemoveCSSPropertyCommand::doApply()
 {
     const StylePropertySet* style = m_element->inlineStyle();
+    if (!style) {

[eseidel, 2013/12/23 21:22:43]

Although (I think?) we allow {} around one-line ifs these days, historically
they were verbotten and most places in blink still avoid them.

[chrishtr, 2013/12/23 22:06:46]

Done.

+        return;
+    }
+
     m_oldValue = style->getPropertyValue(m_property);
     m_important = style->propertyIsImportant(m_property);