Fix incorrectly named variables.

llvm-svn: 289746
diff --git a/lldb/source/API/SBFrame.cpp b/lldb/source/API/SBFrame.cpp
index 5500c33..8d8cb48 100644
--- a/lldb/source/API/SBFrame.cpp
+++ b/lldb/source/API/SBFrame.cpp
@@ -1290,11 +1290,11 @@
     if (stop_locker.TryLock(&process->GetRunLock())) {
       frame = exe_ctx.GetFramePtr();
       if (frame) {
-        std::unique_ptr<llvm::PrettyStackTraceFormat> PST;
+        std::unique_ptr<llvm::PrettyStackTraceFormat> stack_trace;
         if (target->GetDisplayExpressionsInCrashlogs()) {
           StreamString frame_description;
           frame->DumpUsingSettingsFormat(&frame_description);
-          PST = llvm::make_unique<llvm::PrettyStackTraceFormat>(
+          stack_trace = llvm::make_unique<llvm::PrettyStackTraceFormat>(
               "SBFrame::EvaluateExpression (expr = \"%s\", fetch_dynamic_value "
               "= %u) %s",
               expr, options.GetFetchDynamicValue(),