svg_loader: parsing flags in the elliptical arc curve

Since the arc flags can have values 0 or 1, we reported as
an error cases, when a float value was given.
Since the EBNF grammar can be used, we misread some paths.
Removing the condition that prevents giving a float as a flag solves
this problem and is in agreement with the w3 specs.

src/loaders/svg/tvgSvgPath.cpp

@@ -62,7 +62,6 @@ static bool _parseFlag(char** content, int* number)
     *number = *(*content) - '0';
     *content += 1;
     end = *content;
-    if (end && *end == '.') return false;
     *content = _skipComma(end);
 
     return true;