Support demangling again by working around crash bug in demangle library

tools/leaky/bfd.cpp

@@ -69,10 +69,12 @@ void leaky::ReadSymbols(const char *aFileName, u_long aBaseAddress)
 
 //    if ((syminfo.type == 'T') || (syminfo.type == 't')) {
       const char* nm = bfd_asymbol_name(sym);
-      if (nm) {
-//	char* dnm = cplus_demangle(nm, 1);
-//	sp->name = dnm ? dnm : strdup(nm);
-	sp->Init(nm, syminfo.value + aBaseAddress);
+      if (nm && nm[0]) {
+	char* dnm = NULL;
+	if (strncmp("__thunk", nm, 7)) {
+	  dnm = cplus_demangle(nm, 1);
+	}
+	sp->Init(dnm ? dnm : nm, syminfo.value + aBaseAddress);
 	sp++;
 	if (sp >= lastSymbol) {
 	  long n = numExternalSymbols + 10000;