👾 Fixed grant latch and misplaced ifdef

fifo.sv

@@ -106,8 +106,7 @@ module fifo #(
     assert property(
         @(posedge clk_i) (rst_ni && empty_o |-> ~pop_i))
         else $error ("Trying to pop data although the FIFO is empty.");
+    end
     `endif
     `endif
-end
-
 endmodule

mem_arbiter.sv

@@ -82,6 +82,8 @@ module mem_arbiter #(
         data_i       = '{default: 0};
         push_i       = 1'b0;
 
+        for (int i = 0; i < NR_PORTS; i++)
+            data_gnt_o[i] = 1'b0;
         // only go for a new request if we can wait for the valid
         if (~full_o) begin
             for (int i = 0; i < NR_PORTS; i++) begin