Fix spurious outstanding assert

Check it in the sequential process, not the combinatorial one.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>

decode2.vhdl

@@ -188,6 +188,8 @@ begin
 	decode2_0: process(clk)
 	begin
 		if rising_edge(clk) then
+			assert r_int.outstanding <= 1 report "Outstanding bad " & integer'image(r_int.outstanding) severity failure;
+
 			if rin.e.valid = '1' or rin.l.valid = '1' or rin.m.valid = '1' then
 				report "execute " & to_hstring(rin.e.nia);
 			end if;
@@ -385,8 +387,6 @@ begin
 			v_int.outstanding := v_int.outstanding + 1;
 		end if;
 
-		assert r_int.outstanding <= 1 report "Outstanding bad " & integer'image(r_int.outstanding) severity failure;
-
 		if rst = '1' then
 			v_int.state := IDLE;
 			v_int.outstanding := 0;