tree-wide: a bunch of Coccinelle-suggested tweaks

rc2 edition

src/basic/string-util.c

@@ -535,8 +535,7 @@ char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigne
                 for (const char *p = s + len; p < j; ) {
                         size_t slen = ansi_sequence_length(p, j - p);
                         if (slen > 0) {
-                                memcpy(dst, p, slen);
-                                dst += slen;
+                                dst = mempcpy(dst, p, slen);
                                 p += slen;
                         } else
                                 p = utf8_next_char(p);