arduino/arduino-pro-ide#336: Fixed 'Save As...'

Signed-off-by: Akos Kitta <kittaakos@typefox.io>

Author: Akos Kitta

arduino-ide-extension/src/node/sketches-service-impl.ts

@@ -382,7 +382,11 @@ void loop() {
                 }
                 const newName = path.basename(destination);
                 try {
-                    await fs.rename(path.join(destination, new URI(sketch.mainFileUri).path.base), path.join(destination, `${newName}.ino`));
+                    const oldPath = path.join(destination, new URI(sketch.mainFileUri).path.base);
+                    const newPath = path.join(destination, `${newName}.ino`);
+                    if (oldPath !== newPath) {
+                        await fs.rename(oldPath, newPath);
+                    }
                     await this.loadSketch(destinationUri); // Sanity check.
                     resolve();
                 } catch (e) {