+ * methods/rred.cc:
+ - check return of writev() as gcc recommends
+ * methods/mirror.cc:
+ - check return of chdir() as gcc recommends
+ * apt-pkg/deb/dpkgpm.cc:
+ - check return of write() a gcc recommends
+ * apt-inst/deb/debfile.cc:
+ - check return of chdir() as gcc recommends
+ * apt-inst/deb/dpkgdb.cc:
+ - check return of chdir() as gcc recommends