Andre Iguodala appears to have escaped long-term harm after a hit from Houston center Dwight Howard in the final minutes of the Warriors’ Western Conference finals-clinching victory Wednesday night. The Warriors’ swingman said he suffered only a “stinger” when Howard — down by 12 points with 3½ minutes left in the series — jutted a forearm into the neck and left collarbone of Iguodala while setting a screen. Iguodala hopped to the sideline and yanked at his arm in an attempt to regain feeling as the officials reviewed the play as a potential “hostile act.” During his Twitter question-and-answer session Thursday, President Obama was asked if Cleveland’s J.R.