IDE: better error handling for upload/burn bootloader

RunnerException was displayed with an ugly stacktrace, while the
message contained in the exception itself is already quite enough
detailed and clear.

Author: cmaglie

app/src/processing/app/Editor.java

@@ -2573,7 +2573,8 @@ public void run() {
           statusError(I18n.format(
                       _("Error while burning bootloader: missing '{0}' configuration parameter"),
                       e.getMessage()));
-          //statusError(e);
+        } catch (RunnerException e) {
+          statusError(e.getMessage());
         } catch (Exception e) {
           statusError(_("Error while burning bootloader."));
           e.printStackTrace();

arduino-core/src/cc/arduino/packages/uploaders/SerialUploader.java

@@ -322,19 +322,13 @@ public boolean burnBootloader() throws Exception {
       prefs.put("bootloader.verbose", prefs.getOrExcept("bootloader.params.quiet"));
     }
 
-    try {
-      String pattern = prefs.getOrExcept("erase.pattern");
-      String[] cmd = StringReplacer.formatAndSplit(pattern, prefs, true);
-      if (!executeUploadCommand(cmd))
-        return false;
-
-      pattern = prefs.getOrExcept("bootloader.pattern");
-      cmd = StringReplacer.formatAndSplit(pattern, prefs, true);
-      return executeUploadCommand(cmd);
-    } catch (RunnerException e) {
-      throw e;
-    } catch (Exception e) {
-      throw new RunnerException(e);
-    }
+    String pattern = prefs.getOrExcept("erase.pattern");
+    String[] cmd = StringReplacer.formatAndSplit(pattern, prefs, true);
+    if (!executeUploadCommand(cmd))
+      return false;
+
+    pattern = prefs.getOrExcept("bootloader.pattern");
+    cmd = StringReplacer.formatAndSplit(pattern, prefs, true);
+    return executeUploadCommand(cmd);
   }
 }