Break text into lines after changing RTL setting. Avoid null pointer access if...

Break text into lines after changing RTL setting. Avoid null pointer access if string is empty. Fixes sent in by Auria.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3668 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CGUIStaticText.cpp

@@ -258,7 +258,11 @@ bool CGUIStaticText::isWordWrapEnabled() const
 
 void CGUIStaticText::setRightToLeft(bool rtl)
 {
-	RightToLeft = rtl;
+	if (RightToLeft != rtl)
+	{
+		RightToLeft = rtl;
+		breakText();
+	}
 }
 
 
@@ -460,7 +464,8 @@ void CGUIStaticText::breakText()
 					whitespace = L"";
 				}
 
-				whitespace = core::stringw(&c, 1) + whitespace;
+				if (c != 0)
+					whitespace = core::stringw(&c, 1) + whitespace;
 
 				// compute line break
 				if (lineBreak)