Fix regression caused by r249769

* Change TestSettings to test qith go instead of pascal as ToT pascal
  support isn't complete
* Fix crash inside PluginManager

llvm-svn: 249821
diff --git a/lldb/test/settings/TestSettings.py b/lldb/test/settings/TestSettings.py
index f430a9d..21b8b76 100644
--- a/lldb/test/settings/TestSettings.py
+++ b/lldb/test/settings/TestSettings.py
@@ -405,9 +405,9 @@
         self.runCmd("settings clear stop-disassembly-display", check=False)        
         # language
         self.runCmd ("settings set target.language c89")      # Set to known value
-        self.runCmd ("settings set target.language pascal ")    # Set to new value with trailing whitespace
+        self.runCmd ("settings set target.language go ")      # Set to new value with trailing whitespace
         self.expect ("settings show target.language", SETTING_MSG("target.language"),
-            startstr = "target.language (language) = pascal")
+            startstr = "target.language (language) = go")
         self.runCmd("settings clear target.language", check=False)
         # arguments
         self.runCmd ("settings set target.run-args 1 2 3")  # Set to known value