Fix crash (segfault) in etags on generating tags for Erlang files

* lib-src/etags.c: Set allocated and lastlen to zero, after
freeing last ptr in Erlang_functions to prevent dereferencing NULL
pointer (bug#45122).
Copyright-paperwork-exempt: yes

diff --git a/lib-src/etags.c b/lib-src/etags.c
index 4315771a496d680fb544cc3eeed054cad1fa6967..a1c6837e8805d3ff7eb120a9d7c8175b1f2122d9 100644 (file)
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -6063,6 +6063,7 @@ Erlang_functions (FILE *inf)
            {
              free (last);
              last = NULL;
+             allocated = lastlen = 0;
            }
        }
       else