caps: avoid doing logic in g_assert

Make sure we still do the right thing when glib is compiled without
assertions.

diff --git a/gst/gstcaps.c b/gst/gstcaps.c
index 4962ec27c499c1beab177a53c68bc2c88f322310..ba33ed9fa26e6951865a8cbee81da5481878506e 100644 (file)
--- a/gst/gstcaps.c
+++ b/gst/gstcaps.c
@@ -1379,7 +1379,8 @@ gst_caps_subtract (const GstCaps * minuend, const GstCaps * subtrahend)
      You can only remove everything or nothing and that is done above.
      Note: there's a test that checks this behaviour. */
   g_return_val_if_fail (!gst_caps_is_any (minuend), NULL);
-  g_assert ((sublen = subtrahend->structs->len) > 0);
+  sublen = subtrahend->structs->len;
+  g_assert (sublen > 0);
 
   src = gst_caps_copy (minuend);
   for (i = 0; i < sublen; i++) {