Update default disassembly format string so we get
better output when we don't have any symbol name.
It looked like this:

0x1097fd029 <ud2    
0x1097fd02b <addb   %al, (%rax)

now, like this:

0x10cdd3064: ud2    
0x10cdd3066: addb   %al, (%rax)

<rdar://problem/18833391> 

llvm-svn: 220948
diff --git a/lldb/source/Core/Debugger.cpp b/lldb/source/Core/Debugger.cpp
index 11328e4..532ad8a 100644
--- a/lldb/source/Core/Debugger.cpp
+++ b/lldb/source/Core/Debugger.cpp
@@ -125,8 +125,7 @@
     FILE_AND_LINE\
     "\\n"
 
-#define DEFAULT_DISASSEMBLY_FORMAT "${addr-file-or-load} <${function.name-without-args}${function.concrete-only-addr-offset-no-padding}>: "
-
+#define DEFAULT_DISASSEMBLY_FORMAT "${addr-file-or-load}{ <${function.name-without-args}${function.concrete-only-addr-offset-no-padding}>}: "
 
 static PropertyDefinition
 g_properties[] =