test/hotspot/jtreg/gc/g1/TestFromCardCacheIndex.java

8217389: JTREG: Clean up, remove unused variable warnings

*** 128,138 ****
          for (int i = 0; i < arrays.length; i++) {
              Object[] target = arrays[i];
              if (target == null) {
                  continue;
              }
!             final long startAddress = WB.getObjectAddress(target);
              final long lastAddress = getObjectLastAddress(target);
              final int card = getCardIndex32bit(lastAddress);
              if (card == -1) {
                  Object[] foundArray = target;
                  return foundArray;
--- 128,138 ----
          for (int i = 0; i < arrays.length; i++) {
              Object[] target = arrays[i];
              if (target == null) {
                  continue;
              }
!             WB.getObjectAddress(target); // startAddress not used
              final long lastAddress = getObjectLastAddress(target);
              final int card = getCardIndex32bit(lastAddress);
              if (card == -1) {
                  Object[] foundArray = target;
                  return foundArray;