Terminate loop properly when cursor window is full. DO NOT MERGE

The existing code exits the column-filling loop immediately but
may continue to try to fill rows.  Ordinarily this should fail
too but it's possible for the process to continue and then
blow up a little later.  Fixed this problem by exiting the row-
filling loop promptly.

Bug: 21406130
Change-Id: Ifab59188d5d1b40f3c1f5c97604dd48da71bf37b
(cherry picked from commit bb8c841e90)

core/java/android/database/DatabaseUtils.java

@@ -272,7 +272,7 @@ public class DatabaseUtils {
         window.setStartPosition(position);
         window.setNumColumns(numColumns);
         if (cursor.moveToPosition(position)) {
-            do {
+            rowloop: do {
                 if (!window.allocRow()) {
                     break;
                 }
@@ -309,7 +309,7 @@ public class DatabaseUtils {
                     }
                     if (!success) {
                         window.freeLastRow();
-                        break;
+                        break rowloop;
                     }
                 }
                 position += 1;