Fixed warnings in Visual Studio

src/Internals/QuotedString.cpp

@@ -50,7 +50,7 @@ static char unescapeChar(char c)
 
     const char* p = "b\bf\fn\nr\rt\t";
 
-    while (true)
+    for (;;)
     {
         if (p[0] == 0) return c;
         if (p[0] == c) return p[1];