Revert "remove compiler warning on 32-bit systems"

This reverts commit 80819cc01e.

lib/libspl/include/assert.h

@@ -69,8 +69,7 @@ extern void __assert(const char *, const char *, int);
 		char *__buf = alloca(256); \
 		(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
 			#LEFT, #OP, #RIGHT, \
-			(u_longlong_t)((TYPE)(LEFT)), #OP, \
-			(u_longlong_t)((TYPE)(RIGHT))); \
+			(u_longlong_t)(LEFT), #OP, (u_longlong_t)(RIGHT)); \
 		__assert(__buf, __FILE__, __LINE__); \
 	} \
 } while (0)