Fix Redis#blmpop to actually send BLMPOP

It was mistakenly issuing a regular LMPOP.

Author: byroot

lib/redis/commands/lists.rb

@@ -205,7 +205,7 @@ def brpoplpush(source, destination, timeout: 0)
       def blmpop(timeout, *keys, modifier: "LEFT", count: nil)
         raise ArgumentError, "Pick either LEFT or RIGHT" unless modifier == "LEFT" || modifier == "RIGHT"
 
-        args = [:lmpop, keys.size, *keys, modifier]
+        args = [:blmpop, keys.size, *keys, modifier]
         args << "COUNT" << Integer(count) if count
 
         send_blocking_command(args, timeout)

test/lint/lists.rb

@@ -205,14 +205,14 @@ def test_variadic_rpoplpush_expand
 
     def test_blmpop
       target_version('7.0') do
-        assert_nil r.blmpop(1.0, '{1}foo')
+        assert_nil r.blmpop(0.1, '{1}foo')
 
         r.lpush('{1}foo', %w[a b c d e f g])
-        assert_equal ['{1}foo', ['g']], r.blmpop(1.0, '{1}foo')
-        assert_equal ['{1}foo', ['f', 'e']], r.blmpop(1.0, '{1}foo', count: 2)
+        assert_equal ['{1}foo', ['g']], r.blmpop(0.1, '{1}foo')
+        assert_equal ['{1}foo', ['f', 'e']], r.blmpop(0.1, '{1}foo', count: 2)
 
         r.lpush('{1}foo2', %w[a b])
-        assert_equal ['{1}foo', ['a']], r.blmpop(1.0, '{1}foo', '{1}foo2', modifier: "RIGHT")
+        assert_equal ['{1}foo', ['a']], r.blmpop(0.1, '{1}foo', '{1}foo2', modifier: "RIGHT")
       end
     end