Fix libvdeplug link test.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5178 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/configure b/configure
index a166133..f1ee0af 100755
--- a/configure
+++ b/configure
@@ -770,9 +770,14 @@
 if test "$vde" = "yes" ; then
   cat > $TMPC << EOF
 #include <libvdeplug.h>
-int main(void) { struct vde_open_args a = {0, 0, 0} ; return 0;}
+int main(void)
+{
+    struct vde_open_args a = {0, 0, 0};
+    vde_open("", "", &a);
+    return 0;
+}
 EOF
-    if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
+    if $cc $ARCH_CFLAGS -o $TMPE $TMPC -lvdeplug 2> /dev/null ; then
         :
     else
         vde="no"