bpf: Add missing newline characters in verifier error messages

Newline characters are added in two verifier error messages,
refactored in Commit afbf21dce668 ("bpf: Support readonly/readwrite
buffers in verifier"). This way, they do not mix with
messages afterwards.

Signed-off-by: Yonghong Song <[e-mail]>
Signed-off-by: Daniel Borkmann <[e-mail]>
Acked-by: Song Liu <[e-mail]>
Link: https://lore.kernel.org/bpf/[e-mail]

kernel/bpf/verifier.c

···
 {
 	if (off < 0) {
 		verbose(env,
-			"R%d invalid %s buffer access: off=%d, size=%d",
+			"R%d invalid %s buffer access: off=%d, size=%d\n",
 			regno, buf_info, off, size);
 		return -EACCES;
 	}
···
 
 		tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
 		verbose(env,
-			"R%d invalid variable buffer offset: off=%d, var_off=%s",
+			"R%d invalid variable buffer offset: off=%d, var_off=%s\n",
 			regno, off, tn_buf);
 		return -EACCES;
 	}