Simplify the code to get the function entry + avoids too many casts

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14174

coregrind/vg_preloaded.c

@@ -86,9 +86,10 @@ void * VG_NOTIFY_ON_LOAD(ifunc_wrapper) (void)
 #if defined(VGP_ppc64_linux)
    /* ppc64 uses function descriptors, so get the actual function entry
       address for the client request, but return the function descriptor
-      from this function. */
-    UWord *descr = (UWord*)(void*)result;
-    fnentry = (Addr)(void*)(descr[0]);
+      from this function. 
+      result points to the function descriptor, which starts with the
+      function entry. */
+    fnentry = *(Addr*)result;
 #else
     fnentry = result;
 #endif