Always give the GC some time, not just on Rubinius

Author: sodabrew

spec/mysql2/client_spec.rb

@@ -109,7 +109,7 @@ def connect *args
 
   it "should not leave dangling connections after garbage collection" do
     GC.start
-    sleep 1 if defined? Rubinius # Let the rbx GC thread do its work
+    sleep 0.300 # Let GC do its work
     client = Mysql2::Client.new(DatabaseCredentials['root'])
     before_count = client.query("SHOW STATUS LIKE 'Threads_connected'").first['Value'].to_i
 
@@ -120,7 +120,7 @@ def connect *args
     after_count.should == before_count + 10
 
     GC.start
-    sleep 1 if defined? Rubinius # Let the rbx GC thread do its work
+    sleep 0.300 # Let GC do its work
     final_count = client.query("SHOW STATUS LIKE 'Threads_connected'").first['Value'].to_i
     final_count.should == before_count
   end