Updated Status to prevent the stats from going negative

how ever this really more of a bandaid than a fix.

Signed-off-by: Ricky Barrette <rickbarrette@gmail.com>

Asteroids/src/com/RickBarrette/asteroids/Status.java

@@ -61,6 +61,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public synchronized void decrementAsteroidCount() {
+		if(this.mAsteroidCount > 0)
 			this.mAsteroidCount -= 1;
 	}
 
@@ -69,6 +70,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public void decrementLevel() {
+		if(this.mLevel > 0)
 			this.mLevel -= 1;
 	}
 
@@ -78,6 +80,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public synchronized void decrementScore(int score) {
+		if(this.mScore - mScore > 0)
 			this.mScore -= mScore;
 	}
 
@@ -86,6 +89,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public synchronized void decrementShipCount() {
+		if(this.mShipCount > 0)
 			this.mShipCount -= 1;
 	}
 
@@ -94,6 +98,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public synchronized void decrementShotCount() {
+		if(this.mShotCount > 0)
 			this.mShotCount -= 1;
 	}
 
@@ -103,6 +108,7 @@ public class Status extends JPanel {
 	 * @author ricky barrette
 	 */
 	public synchronized void decrementTime(long mTime) {
+		if(this.mTime - mTime > 0)
 		this.mTime -= mTime;
 	}