Fix uninitialized warnings causing build failure

libpkg/backup.c

@@ -91,6 +91,7 @@ copy_database(sqlite3 *src, sqlite3 *dst, const char *name)
 	b = sqlite3_backup_init(dst, "main", src, "main");
 
 	elapsed = -1;
+	done = total = 0;
 	start = time(NULL);
 
 	do {

libpkg/fetch.c

@@ -128,8 +128,8 @@ pkg_fetch_file_to_fd(const char *url, int dest, time_t t)
 	bool srv = false;
 	bool http = false;
 	char zone[MAXHOSTNAMELEN + 13];
-	struct dns_srvinfo *srv_current;
-	struct http_mirror *http_current;
+	struct dns_srvinfo *srv_current = NULL;
+	struct http_mirror *http_current = NULL;
 	const char *mt;
 
 	fetchTimeout = 30;

libpkg/pkg_elf.c

@@ -240,8 +240,8 @@ analyse_elf(struct pkg *pkg, const char *fpath,
 	struct stat sb;
 	int ret = EPKG_OK;
 
-	size_t numdyn;
-	size_t sh_link;
+	size_t numdyn = 0;
+	size_t sh_link = 0;
 	size_t dynidx;
 	const char *osname;
 	const char *shlib;

libpkg/pkg_repo.c

@@ -523,7 +523,7 @@ static int
 maybe_delete_conflicting(const char *origin, const char *version,
 			 const char *pkg_path)
 {
-	int ret;
+	int ret = EPKG_FATAL;
 	const char *oversion;
 
 	if (run_prepared_statement(VERSION, origin) != SQLITE_ROW)

pkg/create.c

@@ -81,7 +81,7 @@ pkg_create_matches(int argc, char **argv, match_t match, pkg_formats fmt,
 	struct pkg_head head = STAILQ_HEAD_INITIALIZER(head);
 	struct pkg_entry *e = NULL;
 	char pkgpath[MAXPATHLEN];
-	const char *format;
+	const char *format = NULL;
 	bool foundone;
 
 #ifndef PKG_COMPAT

pkg/update.c

@@ -49,7 +49,7 @@ pkgcli_update(bool force) {
 	const char *repo_name;
 	bool multi_repos = false;
 	struct pkg_config_kv *repokv = NULL;
-	int retcode;
+	int retcode = EPKG_FATAL;
 
 	if (!quiet)
 		printf("Updating repository catalogue\n");