meta_data.c: fix a build warning

make[3]: Entering directory '/home/ruben/src/collectd/src/daemon'
  CC       meta_data.lo
meta_data.c:728:12: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
    actual = e->value.mv_boolean ? "true" : "false";
           ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
  CCLD     libmetadata.la
  CC       collectd-meta_data.o
meta_data.c:728:12: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
    actual = e->value.mv_boolean ? "true" : "false";
           ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.

diff --git a/src/daemon/meta_data.c b/src/daemon/meta_data.c
index 583d819..19d17bf 100644 (file)
--- a/src/daemon/meta_data.c
+++ b/src/daemon/meta_data.c
@@ -690,7 +690,7 @@ int meta_data_get_boolean(meta_data_t *md, /* {{{ */
 int meta_data_as_string(meta_data_t *md, /* {{{ */
                         const char *key, char **value) {
   meta_entry_t *e;
-  char *actual;
+  const char *actual;
   char buffer[MD_MAX_NONSTRING_CHARS]; /* For non-string types. */
   char *temp;
   int type;