memory plugin: Fix unused variable warning under FreeBSD.

diff --git a/src/memory.c b/src/memory.c
index 8830ffe..2acb412 100644 (file)
--- a/src/memory.c
+++ b/src/memory.c
@@ -190,7 +190,6 @@ static int memory_read (void)
        };
        double sysctl_vals[8];
 
-       size_t len;
        int    i;
 
        for (i = 0; sysctl_keys[i] != NULL; i++)