Add parentheses to avoid warnings when running AR tests.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

activerecord/test/cases/adapter_test.rb

@@ -145,13 +145,13 @@ def test_foreign_key_violations_are_translated_to_specific_exception
 
   def test_add_limit_offset_should_sanitize_sql_injection_for_limit_without_comas
     sql_inject = "1 select * from schema"
-    assert_no_match /schema/, @connection.add_limit_offset!("", :limit=>sql_inject)
-    assert_no_match /schema/, @connection.add_limit_offset!("", :limit=>sql_inject, :offset=>7)
+    assert_no_match(/schema/, @connection.add_limit_offset!("", :limit=>sql_inject))
+    assert_no_match(/schema/, @connection.add_limit_offset!("", :limit=>sql_inject, :offset=>7))
   end
 
   def test_add_limit_offset_should_sanitize_sql_injection_for_limit_with_comas
     sql_inject = "1, 7 procedure help()"
-    assert_no_match /procedure/, @connection.add_limit_offset!("", :limit=>sql_inject)
-    assert_no_match /procedure/, @connection.add_limit_offset!("", :limit=>sql_inject, :offset=>7)
+    assert_no_match(/procedure/, @connection.add_limit_offset!("", :limit=>sql_inject))
+    assert_no_match(/procedure/, @connection.add_limit_offset!("", :limit=>sql_inject, :offset=>7))
   end
 end