t/t1002-kvs-cmd.t: use two separate loops, don't use file descriptor

t/t1002-kvs-cmd.t

@@ -565,19 +565,28 @@ test_expect_success 'kvs: watch a dir, prefix path converted into a key'  '
 # expected output.  This function will re-order the output in each
 # appropriate section (i.e. between ====================== lines)
 sort_watch_output() {
-        rm -f tmp_watch_file
-        rm -f watch_out_sorted
-        while read -u 10 line
+        num=0
+        rm -f tmp_watch_file_$num
+
+        while read line
         do
             if [ "$line" == "======================" ]
             then
-                cat tmp_watch_file | sort >> watch_out_sorted
-                echo "======================" >> watch_out_sorted
-                rm -f tmp_watch_file
+                num=$((num + 1))
+                rm -f tmp_watch_file_$num
             else
-                echo "$line" >> tmp_watch_file
+                echo "$line" >> tmp_watch_file_$num
             fi
-        done 10<watch_out
+        done < watch_out
+
+        rm -f watch_out_sorted
+        num=$((num - 1))
+        for i in `seq 0 $num`
+        do
+            cat tmp_watch_file_${i} | sort >> watch_out_sorted
+            echo "======================" >> watch_out_sorted
+        done
+
         return 0
 }