staging: vt6655: Remove NULL check before kfree

This patch was generated by the following semantic patch:
// <smpl>
@@ expression E; @@
- if (E != NULL) { kfree(E); }
+ kfree(E);

@@ expression E; @@
- if (E != NULL) { kfree(E); E = NULL; }
+ kfree(E);
+ E = NULL;
// </smpl>

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vt6655/device_main.c

@@ -3064,7 +3064,6 @@ else {
 }
 
 error1:
-  if(buffer)
   kfree(buffer);
 
   if(filp_close(filp,NULL))

drivers/staging/vt6655/hostap.c

@@ -860,7 +860,6 @@ int vt6655_hostap_ioctl(PSDevice pDevice, struct iw_point *p)
 	}
 
  out:
-	if (param != NULL)
 	kfree(param);
 
 	return ret;

drivers/staging/vt6655/wpactl.c

@@ -987,7 +987,6 @@ int wpa_ioctl(PSDevice pDevice, struct iw_point *p)
 	}
 
 out:
-	if (param != NULL)
 	kfree(param);
 
 	return ret;