Merge pull request AsyncHttpClient#966 from stsiano/1.9.x

JDK provider does not call any callback handler for some exceptions, close AsyncHttpClient#965

Author: slandelle

src/main/java/com/ning/http/client/providers/jdk/JDKAsyncHttpProvider.java

@@ -383,6 +383,7 @@ public T call() throws Exception {
                 } catch (Throwable t2) {
                     logger.error(t2.getMessage(), t2);
                 }
+                asyncHandler.onThrowable(t);
             } finally {
                 if (terminate) {
                     if (config.getMaxConnections() != -1) {