HTTPCLIENT-1924: HttpClient to shut down the connection manager if a fatal error occurs in the course of a request execution

Author: ok2c

httpclient/src/main/java/org/apache/http/impl/execchain/MainClientExec.java

@@ -355,6 +355,9 @@ public CloseableHttpResponse execute(
         } catch (final RuntimeException ex) {
             connHolder.abortConnection();
             throw ex;
+        } catch (final Error error) {
+            connManager.shutdown();
+            throw error;
         }
     }
 

httpclient/src/main/java/org/apache/http/impl/execchain/MinimalClientExec.java

@@ -247,6 +247,9 @@ public CloseableHttpResponse execute(
         } catch (final RuntimeException ex) {
             releaseTrigger.abortConnection();
             throw ex;
+        } catch (final Error error) {
+            connManager.shutdown();
+            throw error;
         }
     }