*: use unsigned for bit-fields

This should resolve Clang's warning

error: implicit truncation from 'int' to a one-bit wide bit-field
changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]

Signed-off-by: Fabian Groffen <grobian@gentoo.org>

conffile.h

@@ -70,7 +70,7 @@ typedef struct _validate {
 typedef struct _cluster {
 	char *name;
 	enum clusttype type;
-	char isdynamic:1;
+	unsigned char isdynamic:1;
 	union {
 		chashring *ch;
 		servers *forward;
@@ -95,7 +95,7 @@ typedef struct _route {
 	char *strmatch;   /* string to search for if type not REGEX or MATCHALL */
 	destinations *dests; /* where matches should go */
 	char *masq;       /* when set, what to feed to the hashfunc when routing */
-	char stop:1;      /* whether to continue matching rules after this one */
+	unsigned char stop:1;/* whether to continue matching rules after this one */
 	enum {
 		MATCHALL,     /* the '*', don't do anything, just match everything */
 		REGEX,        /* a regex match */

dispatcher.c

@@ -124,10 +124,10 @@ typedef struct _connection {
 	char srcaddr[24];  /* string representation of source address */
 	char buf[METRIC_BUFSIZ];
 	int buflen;
-	char needmore:1;
-	char noexpire:1;
-	char isaggr:1;
-	char isudp:1;
+	unsigned char needmore:1;
+	unsigned char noexpire:1;
+	unsigned char isaggr:1;
+	unsigned char isudp:1;
 	char datawaiting; /* full byte for atomic access */
 	char metric[METRIC_BUFSIZ];
 	destination dests[CONN_DESTS_SIZE];

server.c

@@ -94,7 +94,6 @@ struct _server {
 	char *instance;
 	struct addrinfo *saddr;
 	struct addrinfo *hint;
-	char reresolve:1;
 	int fd;
 	z_strm *strm;
 	queue *queue;
@@ -111,7 +110,8 @@ struct _server {
 	pthread_t tid;
 	struct _server **secondaries;
 	size_t secondariescnt;
-	char failover:1;
+	unsigned char reresolve:1;
+	unsigned char failover:1;
 	char failure;       /* full byte for atomic access */
 	char running;       /* full byte for atomic access */
 	char keep_running;  /* full byte for atomic access */