Make sure font color attribute is quoted.

We need to add quotes to the color attribute for the font tag, or else
the XML parser will choke and the HTML will not be rendered.
Signed-off-by: Rafaël Carré <funman@videolan.org>

modules/codec/cc.c

@@ -986,9 +986,9 @@ static void Eia608TextLine( struct eia608_screen *screen, char *psz_text, int i_
                     "#ff00ff",  // magenta
                     "#ffffff",  // user defined XXX we use white
                 };
-                CAT( "<font color=" );
+                CAT( "<font color=\"" );
                 CAT( ppsz_color[color] );
-                CAT( ">" );
+                CAT( "\">" );
             }
             if( ( b_close_italics && b_italics ) || ( b_italics && !b_last_italics ) )
                 CAT( "<i>" );