[lldb] Silence GCC warnings about format not being a string literal in LLDB_SCOPED_TIMER

Pass "%s" as the format string literal and LLVM_PRETTY_FUNCTION as
argument to it.

Differential Revision: https://reviews.llvm.org/D99120

Author: mstorsjo

lldb/include/lldb/Utility/Timer.h

@@ -76,7 +76,7 @@ class Timer {
 
 #define LLDB_SCOPED_TIMER()                                                    \
   static ::lldb_private::Timer::Category _cat(LLVM_PRETTY_FUNCTION);           \
-  ::lldb_private::Timer _scoped_timer(_cat, LLVM_PRETTY_FUNCTION)
+  ::lldb_private::Timer _scoped_timer(_cat, "%s", LLVM_PRETTY_FUNCTION)
 #define LLDB_SCOPED_TIMERF(...)                                                \
   static ::lldb_private::Timer::Category _cat(LLVM_PRETTY_FUNCTION);           \
   ::lldb_private::Timer _scoped_timer(_cat, __VA_ARGS__)