parser_bison: Fix for implicit declaration of isalnum

Have to include ctype.h to make it known.

Fixes: e76bb37940181 ("src: allow for variables in the log prefix string")
Signed-off-by: Phil Sutter <phil@nwl.cc>

diff --git a/src/parser_bison.y b/src/parser_bison.y
index abce0479081d24ec633f506593441b2483ff8cfe..bd2232a3de2787716fa3ad09560ce84702ef8771 100644 (file)
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -10,6 +10,7 @@
 
 %{
 
+#include <ctype.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <inttypes.h>