Fix typo. platfrom -> platform

llvm-svn: 236543
diff --git a/lldb/test/tools/lldb-server/gdbremote_testcase.py b/lldb/test/tools/lldb-server/gdbremote_testcase.py
index 580e9dc..74c5fb8 100644
--- a/lldb/test/tools/lldb-server/gdbremote_testcase.py
+++ b/lldb/test/tools/lldb-server/gdbremote_testcase.py
@@ -60,8 +60,8 @@
         self.named_pipe = None
         self.named_pipe_fd = None
         self.stub_sends_two_stop_notifications_on_kill = False
-        if lldb.platfrom_url:
-            self.stub_hostname = re.match(".*://(.*):[0-9]+", lldb.platfrom_url).group(1)
+        if lldb.platform_url:
+            self.stub_hostname = re.match(".*://(.*):[0-9]+", lldb.platform_url).group(1)
         else:
             self.stub_hostname = "localhost"