lpr: small code shrink

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/printutils/lpr.c b/printutils/lpr.c
index fc6bca9..7488795 100644 (file)
--- a/printutils/lpr.c
+++ b/printutils/lpr.c
@@ -212,12 +212,9 @@ int lpqr_main(int argc UNUSED_PARAM, char *argv[])
                );
                // delete possible "\nX\n" patterns
                c = controlfile;
-               cflen = (unsigned)strlen(controlfile);
                while ((c = strchr(c, '\n')) != NULL) {
                        if (c[1] && c[2] == '\n') {
-                               /* can't use strcpy, results are undefined */
-                               memmove(c, c+2, cflen - (c-controlfile) - 1);
-                               cflen -= 2;
+                               overlapping_strcpy(c, c+2);
                        } else {
                                c++;
                        }
@@ -228,6 +225,7 @@ int lpqr_main(int argc UNUSED_PARAM, char *argv[])
                        bb_error_msg("sending control file");
                /* "Acknowledgement processing must occur as usual
                 * after the command is sent." */
+               cflen = (unsigned)strlen(controlfile);
                fdprintf(fd, "\x2" "%u c%s\n", cflen, remote_filename);
                get_response_or_say_and_die(fd, "sending control file");
                /* "Once all of the contents have