Utils: Somewhat improve remote FilePath::canonicalPath()

At least keep the remoteness.

Change-Id: I80c865d7b5c7d2dbca6ea6c4c269ef144a7d144c
Reviewed-by: David Schulz <david.schulz@qt.io>

src/libs/utils/fileutils.cpp

@@ -254,6 +254,10 @@ FilePath FileUtils::resolveSymlinks(const FilePath &path)
 */
 FilePath FilePath::canonicalPath() const
 {
+    if (needsDevice()) {
+        // FIXME: Not a full solution, but it stays on the right device.
+        return *this;
+    }
     const QString result = toFileInfo().canonicalFilePath();
     if (result.isEmpty())
         return *this;