V4L/DVB: pvrusb2: remove unneeded NULL checks

We dereference "maskptr" unconditionally at the start of the function
and also inside the call to parse_tlist() towards the end of the
function.  This function is called from store_val_any() and it always
passes a non-NULL pointer.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/pvrusb2/pvrusb2-ctrl.c

@@ -513,7 +513,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
 			if (ret >= 0) {
 				ret = pvr2_ctrl_range_check(cptr,*valptr);
 			}
-			if (maskptr) *maskptr = ~0;
+			*maskptr = ~0;
 		} else if (cptr->info->type == pvr2_ctl_bool) {
 			ret = parse_token(ptr,len,valptr,boolNames,
 					  ARRAY_SIZE(boolNames));
@@ -522,7 +522,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
 			} else if (ret == 0) {
 				*valptr = (*valptr & 1) ? !0 : 0;
 			}
-			if (maskptr) *maskptr = 1;
+			*maskptr = 1;
 		} else if (cptr->info->type == pvr2_ctl_enum) {
 			ret = parse_token(
 				ptr,len,valptr,
@@ -531,7 +531,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
 			if (ret >= 0) {
 				ret = pvr2_ctrl_range_check(cptr,*valptr);
 			}
-			if (maskptr) *maskptr = ~0;
+			*maskptr = ~0;
 		} else if (cptr->info->type == pvr2_ctl_bitmask) {
 			ret = parse_tlist(
 				ptr,len,maskptr,valptr,