Initialize asyncio event loop before using it

Python 3.14 (in Fedora 43) throws RunetimeError if event loop is not
initialized before using it.

Resolves: QubesOS/qubes-issues#10188

Author: alimirjamali

qubespdfconverter/client.py

@@ -677,7 +677,8 @@ def main(**params):
     logging.basicConfig(format="error: %(message)s")
 
     if params["files"]:
-        loop = asyncio.get_event_loop()
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
         sys.exit(loop.run_until_complete(run(params)))
     else:
         print("No files to sanitize.")

qubespdfconverter/server.py

@@ -297,7 +297,8 @@ def main():
         pdf_path.write_bytes(data)
         base = BaseFile(pdf_path)
 
-        loop = asyncio.get_event_loop()
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
         try:
             loop.run_until_complete(base.sanitize())
         except subprocess.CalledProcessError: