Changed the bool conversion operator on ConstString

to be explicit, to prevent horrid things like

std::string a = ConstString("foo")

from taking the path ConstString -> bool -> char
-> std::string.

This fixes, among other things, ClangFunction.

<rdar://problem/15137989>

llvm-svn: 191934

lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp

@@ -847,7 +847,7 @@ SymbolFileDWARFDebugMap::ResolveSymbolContext (const FileSpec& file_spec, uint32
             if (GetFileSpecForSO (i, so_file_spec))
             {
                 // Match the full path if the incoming file_spec has a directory (not just a basename)
-                const bool full_match = file_spec.GetDirectory();
+                const bool full_match = (bool)file_spec.GetDirectory();
                 resolve = FileSpec::Equal (file_spec, so_file_spec, full_match);
             }
         }