wcolorpanel.c Removed hsbInit warnings

wcolorpanel.c Removed hsbInit warnings

This patch removes these warnings in the hsbInit function.

wcolorpanel.c: In function ‘hsbInit’:
wcolorpanel.c:3456:16: warning: ‘%u’ directive writing between 1 and 5 bytes into a region of size 4 [-Wformat-overflow=]
  sprintf(tmp, "%d", value[0]);
                ^~
wcolorpanel.c:3456:15: note: directive argument in the range [0, 65535]
  sprintf(tmp, "%d", value[0]);
               ^~~~
wcolorpanel.c:3456:2: note: ‘sprintf’ output between 2 and 6 bytes into a destination of size 4
  sprintf(tmp, "%d", value[0]);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

The problem is that the hue variable in the RHSVColor struct. This variable is not an integer, is a shor variable, so using the printf using the "%d" modifier spects an integer. Using a "%hu" prints a unsigned short value.

typedef struct RHSVColor {
    unsigned short hue;	       /* 0-359 */
    unsigned char saturation;      /* 0-255 */
    unsigned char value;	       /* 0-255 */
} RHSVColor;