*: use "can't" instead of "cannot"

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/selinux/runcon.c b/selinux/runcon.c
index 6ecd789..8472b70 100644
--- a/selinux/runcon.c
+++ b/selinux/runcon.c
@@ -41,13 +41,13 @@
 	security_context_t cur_context;
 
 	if (getcon(&cur_context))
-		bb_error_msg_and_die("cannot get current context");
+		bb_error_msg_and_die("can't get current context");
 
 	if (compute_trans) {
 		security_context_t file_context, new_context;
 
 		if (getfilecon(command, &file_context) < 0)
-			bb_error_msg_and_die("cannot retrieve attributes of '%s'",
+			bb_error_msg_and_die("can't retrieve attributes of '%s'",
 					     command);
 		if (security_compute_create(cur_context, file_context,
 					    SECCLASS_PROCESS, &new_context))