Fix crashing when accessing out of global arrays

src/device.c

@@ -51,7 +51,7 @@ enum device device_from_string(const char * device) {
 
 const char * device_to_string(enum device device) {
 
-	if ( device > sizeof(devices)/sizeof(devices[0]) )
+	if ( device >= sizeof(devices)/sizeof(devices[0]) )
 		return NULL;
 
 	return devices[device];
@@ -68,7 +68,7 @@ static const char * long_devices[] = {
 
 const char * device_to_long_string(enum device device) {
 
-	if ( device > sizeof(long_devices)/sizeof(long_devices[0]) )
+	if ( device >= sizeof(long_devices)/sizeof(long_devices[0]) )
 		return NULL;
 
 	return long_devices[device];

src/image.c

@@ -540,7 +540,7 @@ enum image_type image_type_from_string(const char * type) {
 
 const char * image_type_to_string(enum image_type type) {
 
-	if ( type > sizeof(image_types)/sizeof(image_types[0]) )
+	if ( type >= sizeof(image_types)/sizeof(image_types[0]) )
 		return NULL;
 
 	return image_types[type];

src/main.c

@@ -300,7 +300,7 @@ static const char * image_tmp[] = {
 
 static const char * image_tmp_name(enum image_type type) {
 
-	if ( type > sizeof(image_tmp)/sizeof(image_tmp[0]) )
+	if ( type >= sizeof(image_tmp)/sizeof(image_tmp[0]) )
 		return NULL;
 
 	if ( ! image_tmp[type] || ! image_tmp[type][0] )
@@ -1288,7 +1288,6 @@ int main(int argc, char **argv) {
 
 					}
 
-
 				}
 
 			}