src: switch asserts to wl_abort

assert()s can be compiled away by #defining NDEBUG. Some build systems
do this. Using wl_abort gives a human readable error message and it
isn't compiled away. This commit closes issue #230.

Signed-off-by: meltq <tejasvipin76@gmail.com>

src/connection.c

@@ -75,7 +75,8 @@ struct wl_connection {
 static inline size_t
 size_pot(uint32_t size_bits)
 {
-	assert(size_bits < 8 * sizeof(size_t));
+	if (!(size_bits < 8 * sizeof(size_t)))
+		wl_abort("Too many bits for size_t\n");
 
 	return ((size_t)1) << size_bits;
 }