build fix for SBInstruction.

oops!  I cherry-picked  rL374820 thinking it was completely
independent of D68737, but it wasn't.  It makes an incidental
use of SBFile::GetFile, which is introduced there, so I broke the
build.

The docs say you can commit without review for "obvious".   I think
this qualifies.   If this kind of fix isn't considered obvious, let
me know and I'll revert instead.

Fixes: rL374820
llvm-svn: 374825

lldb/include/lldb/API/SBFile.h

@@ -14,6 +14,8 @@
 namespace lldb {
 
 class LLDB_API SBFile {
+  friend class SBInstruction;
+  friend class SBInstructionList;
   friend class SBDebugger;
   friend class SBCommandReturnObject;
   friend class SBProcess;

lldb/source/API/SBInstruction.cpp

@@ -264,7 +264,7 @@ void SBInstruction::Print(FILE *outp) {
 
 void SBInstruction::Print(SBFile out) {
   LLDB_RECORD_METHOD(void, SBInstruction, Print, (SBFile), out);
-  Print(out.GetFile());
+  Print(out.m_opaque_sp);
 }
 
 void SBInstruction::Print(FileSP out_sp) {

lldb/source/API/SBInstructionList.cpp

@@ -130,7 +130,7 @@ void SBInstructionList::Print(SBFile out) {
   LLDB_RECORD_METHOD(void, SBInstructionList, Print, (SBFile), out);
   if (!out.IsValid())
     return;
-  StreamFile stream(out.GetFile());
+  StreamFile stream(out.m_opaque_sp);
   GetDescription(stream);
 }