util: uri: Convert port number to unsigned integer

Negative ports don't make sense so use a unsigned integer.

src/util/virstring.c

@@ -1356,7 +1356,7 @@ void virStringTrimOptionalNewline(char *str)
  */
 int
 virStringParsePort(const char *str,
-                   int *port)
+                   unsigned int *port)
 {
     unsigned int p = 0;
 

src/util/virstring.h

@@ -297,7 +297,7 @@ char *virStringEncodeBase64(const uint8_t *buf, size_t buflen);
 void virStringTrimOptionalNewline(char *str);
 
 int virStringParsePort(const char *str,
-                       int *port)
+                       unsigned int *port)
     ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 
 #endif /* __VIR_STRING_H__ */

src/util/viruri.h

@@ -42,7 +42,7 @@ struct _virURI {
     char *scheme;       /* the URI scheme */
     char *server;       /* the server part */
     char *user;         /* the user part */
-    int port;           /* the port number */
+    unsigned int port;  /* the port number */
     char *path;         /* the path string */
     char *query;        /* the query string */
     char *fragment;     /* the fragment string */