Aligned exception handling of *AsyncWithHttpInfo with handling from *WithHttpInfo

Author: bkonetzny

modules/openapi-generator/src/main/resources/php/api.mustache

@@ -482,17 +482,20 @@ use {{invokerPackage}}\ObjectSerializer;
                     {{/returnType}}
                 },
                 function ($exception) {
-                    $response = $exception->getResponse();
-                    $statusCode = $response->getStatusCode();
+                    if ($exception instanceof RequestException) {
+                        throw new ApiException(
+                            "[{$exception->getCode()}] {$exception->getMessage()}",
+                            (int) $exception->getCode(),
+                            $exception->getResponse() ? $exception->getResponse()->getHeaders() : null,
+                            $exception->getResponse() ? (string) $exception->getResponse()->getBody() : null
+                        );
+                    }
+
                     throw new ApiException(
-                        sprintf(
-                            '[%d] Error connecting to the API (%s)',
-                            $statusCode,
-                            $exception->getRequest()->getUri()
-                        ),
-                        $statusCode,
-                        $response->getHeaders(),
-                        (string) $response->getBody()
+                        "[{$exception->getCode()}] {$exception->getMessage()}",
+                        (int) $exception->getCode(),
+                        null,
+                        null
                     );
                 }
             );