[BitCode] decode nossp fn attr

I missed this in https://reviews.llvm.org/D87956.

Reviewed By: void

Differential Revision: https://reviews.llvm.org/D90177

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -1537,6 +1537,8 @@ static Attribute::AttrKind getAttrFromCode(uint64_t Code) {
     return Attribute::ByRef;
   case bitc::ATTR_KIND_MUSTPROGRESS:
     return Attribute::MustProgress;
+  case bitc::ATTR_KIND_NO_STACK_PROTECT:
+    return Attribute::NoStackProtect;
   }
 }