staging: unisys: Fix NULL comparison vbusdeviceinfo.h

This patches resolves the NULL comparison checkpatch warnings
Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorbus/vbusdeviceinfo.h

@@ -62,7 +62,7 @@ vbuschannel_sanitize_buffer(char *p, int remain, char *src, int srcmax)
 					p++;
 					remain--;
 					chars++;
-				} else if (p == NULL) {
+				} else if (!p) {
 					chars++;
 				}
 				nonprintable_streak = 0;
@@ -72,7 +72,7 @@ vbuschannel_sanitize_buffer(char *p, int remain, char *src, int srcmax)
 				p++;
 				remain--;
 				chars++;
-			} else if (p == NULL) {
+			} else if (!p) {
 				chars++;
 			}
 		} else {