Fix for too short a memset

Found by pattern matching, this is the same change as DWCDriver-0_27.

Version 0.27. Tagged as 'MUSBDriver-0_27'

VersionNum

-/* (0.26)
+/* (0.27)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        0.26
+#define Module_MajorVersion_CMHG        0.27
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                26 Mar 2016
+#define Module_Date_CMHG                02 May 2016
 
-#define Module_MajorVersion             "0.26"
-#define Module_Version                  26
+#define Module_MajorVersion             "0.27"
+#define Module_Version                  27
 #define Module_MinorVersion             ""
-#define Module_Date                     "26 Mar 2016"
+#define Module_Date                     "02 May 2016"
 
-#define Module_ApplicationDate          "26-Mar-16"
+#define Module_ApplicationDate          "02-May-16"
 
 #define Module_ComponentName            "MUSBDriver"
 #define Module_ComponentPath            "mixed/RiscOS/Sources/HWSupport/USB/Controllers/MUSBDriver"
 
-#define Module_FullVersion              "0.26"
-#define Module_HelpVersion              "0.26 (26 Mar 2016)"
-#define Module_LibraryVersionInfo       "0:26"
+#define Module_FullVersion              "0.27"
+#define Module_HelpVersion              "0.27 (02 May 2016)"
+#define Module_LibraryVersionInfo       "0:27"

c/port

@@ -137,7 +137,7 @@ callout_init (struct callout* c)
 #ifdef USB_DEBUG0
     if (usbdebug > 15) dprintf (("Port", "callout init %p\n", c));
 #endif
-    memset (c, 0, sizeof c);
+    memset (c, 0, sizeof (*c));
 }
 
 _kernel_oserror*