[NFC] Remove ASCII lines from comments

A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.

Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.

I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.

Differential revision: https://reviews.llvm.org/D60508

llvm-svn: 358135

lldb/source/Target/StackFrame.cpp

@@ -259,12 +259,10 @@ Block *StackFrame::GetFrameBlock() {
   return nullptr;
 }
 
-//----------------------------------------------------------------------
 // Get the symbol context if we already haven't done so by resolving the
 // PC address as much as possible. This way when we pass around a
 // StackFrame object, everyone will have as much information as possible and no
 // one will ever have to look things up manually.
-//----------------------------------------------------------------------
 const SymbolContext &
 StackFrame::GetSymbolContext(SymbolContextItem resolve_scope) {
   std::lock_guard<std::recursive_mutex> guard(m_mutex);
@@ -1453,7 +1451,6 @@ ValueObjectSP GetValueForDereferincingOffset(StackFrame &frame,
   return GetValueForOffset(frame, pointee, offset);
 }
 
-//------------------------------------------------------------------
 /// Attempt to reconstruct the ValueObject for the address contained in a
 /// given register plus an offset.
 ///
@@ -1479,7 +1476,6 @@ ValueObjectSP GetValueForDereferincingOffset(StackFrame &frame,
 ///   A string describing the base for the ExpressionPath.  This could be a
 ///     variable, a register value, an argument, or a function return value.
 ///   The ValueObject if found.  If valid, it has a valid ExpressionPath.
-//------------------------------------------------------------------
 lldb::ValueObjectSP DoGuessValueAt(StackFrame &frame, ConstString reg,
                                    int64_t offset, Disassembler &disassembler,
                                    VariableList &variables, const Address &pc) {