[entropy.client.package] _generate_content_file: do not catch Exception

Move the os.remove() call to the finally block and detect failures via
a status boolean. This way, warnings won't be raised as exceptions.

lib/entropy/client/interfaces/package.py

@@ -4216,6 +4216,7 @@ class Package:
                 raise
 
         tmp_fd, tmp_path = None, None
+        generated = False
         try:
             tmp_fd, tmp_path = tempfile.mkstemp(
                 prefix="PackageContent",
@@ -4224,20 +4225,19 @@ class Package:
                 for path, ftype in content:
                     tmp_f.write(package_id, path, ftype)
 
+            generated = True
             return tmp_path
-        except Exception as exc:
-            if tmp_path is not None:
-                try:
-                    os.remove(tmp_path)
-                except (OSError, IOError):
-                    pass
-            raise exc
         finally:
             if tmp_fd is not None:
                 try:
                     os.close(tmp_fd)
                 except OSError:
                     pass
+            if tmp_path is not None and not generated:
+                try:
+                    os.remove(tmp_path)
+                except (OSError, IOError):
+                    pass
 
     @staticmethod
     def _merge_content_file(content_file, sorted_content,