Remove code meant to handle what is not believed to be a non-existent race condition.

src/main/java/com/zaxxer/hikari/util/ConcurrentBag.java

@@ -124,27 +124,22 @@ public class ConcurrentBag<T extends IConcurrentBagEntry> implements AutoCloseab
       final long startScan = System.nanoTime();
       final long originTimeout = timeout;
       long startSeq;
-      try {
+      do {
          do {
-            do {
-               startSeq = synchronizer.currentSequence();
-               for (final T bagEntry : sharedList) {
-                  if (bagEntry.state().compareAndSet(STATE_NOT_IN_USE, STATE_IN_USE)) {
-                     return bagEntry;
-                  }
+            startSeq = synchronizer.currentSequence();
+            for (final T bagEntry : sharedList) {
+               if (bagEntry.state().compareAndSet(STATE_NOT_IN_USE, STATE_IN_USE)) {
+                  return bagEntry;
                }
-            } while (startSeq < synchronizer.currentSequence());
-
-            if (addItemFuture == null || addItemFuture.isDone()) {
-               addItemFuture = listener.addBagItem();
             }
-   
-            timeout = originTimeout - (System.nanoTime() - startScan);
-         } while (timeout > 1000L && synchronizer.waitUntilSequenceExceeded(startSeq, timeout));
-      }
-      finally {
-         synchronizer.signal();
-      }
+         } while (startSeq < synchronizer.currentSequence());
+
+         if (addItemFuture == null || addItemFuture.isDone()) {
+            addItemFuture = listener.addBagItem();
+         }
+
+         timeout = originTimeout - (System.nanoTime() - startScan);
+      } while (timeout > 1000L && synchronizer.waitUntilSequenceExceeded(startSeq, timeout));
 
       return null;
    }