Fixed initialisation crash on loading qcap dll.

diff --git a/dlls/qcap/dllsetup.c b/dlls/qcap/dllsetup.c
index fcdcdfb..15dbe16 100644
--- a/dlls/qcap/dllsetup.c
+++ b/dlls/qcap/dllsetup.c
@@ -359,6 +359,7 @@
 
     for (i = 0; i < num; i++, pList++)
     {
-        pList->m_lpfnInit(bLoading, pList->m_ClsID);
+        if (pList->m_lpfnInit)
+            pList->m_lpfnInit(bLoading, pList->m_ClsID);
     }
 }