libagentx use variable for malloc argument

[Martijn van Duren]

OK?

martijn@

Index: ax.c
===================================================================
RCS file: /cvs/src/lib/libagentx/ax.c,v
retrieving revision 1.2
diff -u -p -r1.2 ax.c
--- ax.c        26 Oct 2020 16:02:16 -0000      1.2
+++ ax.c        26 Oct 2020 18:07:30 -0000
@@ -69,9 +69,9 @@ ax_new(int fd)
        if ((ax = calloc(1, sizeof(*ax))) == NULL)
                return NULL;
        ax->ax_fd = fd;
-       if ((ax->ax_rbuf = malloc(512)) == NULL)
-               goto fail;
        ax->ax_rbsize = 512;
+       if ((ax->ax_rbuf = malloc(ax->ax_rbsize)) == NULL)
+               goto fail;
        ax->ax_byteorder = AX_BYTE_ORDER_NATIVE;
 
        return ax;