Fixed bug in plan serializer when serializing chars and unsigned chars.
Fixed bug in plan serializer when serializing chars and unsigned chars.

cezarfx/zorba,bgarrels/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,28msec/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,28msec/zorba,28msec/zorba,bgarrels/zorba,28msec/zorba,cezarfx/zorba,cezarfx/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,cezarfx/zorba,cezarfx/zorba