more concise

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: mwri

src/a2a/client/card_resolver.py

@@ -74,9 +74,7 @@ async def get_agent_card(
         else:
             path_segment = relative_card_path.lstrip('/')
 
-        target_url = self.base_url
-        if path_segment:
-            target_url = f'{target_url}/{path_segment}'
+        target_url = f'{self.base_url}/{path_segment}' if path_segment else self.base_url
 
         try:
             response = await self.httpx_client.get(