a bit more consistency for for the imlib2 check

Originally committed as revision 7831 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1668,10 +1668,11 @@ fi
 ##########################################
 # imlib check
 
+imlib2=no
 if (imlib2-config --version) >/dev/null 2>&1 ; then
     temp_cflags `imlib2-config --cflags`
     temp_extralibs `imlib2-config --libs`
-    check_ld <<EOF && imlib2=yes || imlib2=no
+    check_ld <<EOF && imlib2=yes
 #include <Imlib2.h>
 int main( void ) { return (int) imlib_load_font("foo"); }
 EOF