unsigned counters

Use unsigned variables for storing the count of items or for iteration
variables.  Since there can never be a negative number of items, it
makes sense to use an unsigned data type here.  This change is safe
because the unsigned values are only used for adddressing array items.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7214 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/state_file.c

@@ -50,7 +50,7 @@ static void get_state_file_path(void)
 
 void write_state_file(void)
 {
-	int i;
+	unsigned int i;
 	FILE *fp;
 
 	if (!sfpath)
@@ -72,7 +72,7 @@ void write_state_file(void)
 void read_state_file(void)
 {
 	struct stat st;
-	int i;
+	unsigned int i;
 	FILE *fp;
 
 	get_state_file_path();