Add comment about NonZero printing as character literal.

src/etc/lldb_providers.py

@@ -746,6 +746,8 @@ def StdNonZeroNumberSummaryProvider(valobj, _dict):
     inner = valobj.GetChildAtIndex(0)
     inner_inner = inner.GetChildAtIndex(0)
 
+    # FIXME: Avoid printing as character literal,
+    #        see https://github.com/llvm/llvm-project/issues/65076.
     if inner_inner.GetTypeName() in ['char', 'unsigned char']:
       return str(inner_inner.GetValueAsSigned())
     else: