SF ticket #116 UpnpRemoveVirtualDir wrong linked list operation

What if pVirtualDirList has two nodes and what we want to delete is the
first one. Patch attached.
(cherry picked from commit 907c7c2621f8b2323b6bd8227ec082ce41c0a292)

ChangeLog

@@ -349,6 +349,13 @@ Version 1.8.0
 Version 1.6.19
 *******************************************************************************
 
+2013-07-30 Zheng Peng <darkelf2010(at)users.sf.net>
+
+	SF ticket #116 UpnpRemoveVirtualDir wrong linked list operation
+
+	What if pVirtualDirList has two nodes and what we want to delete is the
+	first one. Patch attached.
+
 2013-07-30 Sebastian Brandt <s.brandt(at)aixtrusion.de>
 
 	Dear libupnp-devels,

THANKS

@@ -69,4 +69,5 @@ exempt of errors.
 - Tom (tomdev2)
 - Yoichi Nakayama (yoichi)
 - zephyrus (zephyrus00jp)
+- Zheng Peng (darkelf2010)
 

upnp/src/api/upnpapi.c

@@ -4187,16 +4187,17 @@ int UpnpRemoveVirtualDir(const char *dirName)
         return UPNP_E_INVALID_PARAM;
     }
     /* Handle the special case where the directory that we are */
-    /* removing is the first and only one in the list. */
-    if( ( pVirtualDirList->next == NULL ) &&
-        ( strcmp( pVirtualDirList->dirName, dirName ) == 0 ) ) {
-        free( pVirtualDirList );
-        pVirtualDirList = NULL;
+    /* removing is the first in the list. */
+    if (strcmp( pVirtualDirList->dirName, dirName ) == 0)
+    {
+        pPrev = pVirtualDirList;
+        pVirtualDirList = pVirtualDirList->next;
+        free( pPrev );
         return UPNP_E_SUCCESS;
     }
 
-    pCur = pVirtualDirList;
-    pPrev = pCur;
+    pCur = pVirtualDirList->next;
+    pPrev = pVirtualDirList;
 
     while( pCur != NULL ) {
         if( strcmp( pCur->dirName, dirName ) == 0 ) {