Fix Eastwood warnings

Author: cichli

eastwood.clj

@@ -8,3 +8,7 @@
  {:linter :deprecations
   :symbol-matches #{#"^public boolean java\.lang\.reflect\.AccessibleObject\.isAccessible\(\)$"}
   :reason "The replacement, canAccess(Object), was added in JDK9 – but we still support JDK8."})
+
+(disable-warning
+ {:linter :deprecations
+  :symbol-matches #{#"^public final void java\.lang\.Thread\.stop\(\)$"}})

src/cider/nrepl/middleware/content_type.clj

@@ -106,9 +106,9 @@
 
     (instance? java.awt.Image value)
     (with-open [bos (ByteArrayOutputStream.)]
-      (ImageIO/write ^Image value "png" ^OutputStream bos)
       (merge response
-             (slurp-reply ["image/png" {}] (.toByteArray bos))))
+             (when (ImageIO/write ^Image value "png" ^OutputStream bos)
+               (slurp-reply ["image/png" {}] (.toByteArray bos)))))
 
     :else response))