env: fix the env export varname

The env export command doesn't export the first variable of the list
since commit 5a31ea04c9ee5544fbb70ad7597ea4b294840eab
"env grep" - reimplement command using hexport_r()

Signed-off-by: Pierre Aubert <p.aubert@staubli.com>
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 0d4d02c..5bcc324 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -157,10 +157,8 @@
 	grep_how  = H_MATCH_SUBSTR;	/* default: substring search	*/
 	grep_what = H_MATCH_BOTH;	/* default: grep names and values */
 
-	while (argc > 1 && **(argv + 1) == '-') {
-		char *arg = *++argv;
-
-		--argc;
+	while (--argc > 0 && **++argv == '-') {
+		char *arg = *argv;
 		while (*++arg) {
 			switch (*arg) {
 #ifdef CONFIG_REGEX
diff --git a/lib/hashtable.c b/lib/hashtable.c
index c5a2b08..4356b23 100644
--- a/lib/hashtable.c
+++ b/lib/hashtable.c
@@ -564,7 +564,7 @@
 	int arg;
 	void *priv = NULL;
 
-	for (arg = 1; arg < argc; ++arg) {
+	for (arg = 0; arg < argc; ++arg) {
 #ifdef CONFIG_REGEX
 		struct slre slre;