Revert "[lldb] SetErrorStringWithFormatv -> FromErrorStringWithFormatv (NFC)"

This reverts commit fae7d68.

Author: jasonmolenda

lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp

@@ -407,9 +407,8 @@ Status ProcessKDP::DoResume(RunDirection direction) {
   Log *log = GetLog(KDPLog::Process);
 
   if (direction == RunDirection::eRunReverse) {
-    error.FromErrorStringWithFormatv(
-        "error: {0} does not support reverse execution of processes",
-        GetPluginName());
+    error.SetErrorStringWithFormatv(
+        "error: {0} does not support reverse execution of processes", GetPluginName());
     return error;
   }