Use const unsigned for hex arrays

Some constants are too big for the signed type.

rdp/rdp_rdp.c

@@ -312,7 +312,7 @@ rdp_rdp_out_colcache_caps(struct rdp_rdp *self, struct stream *s)
     return 0;
 }
 
-static char caps_0x0d[] =
+static const unsigned char caps_0x0d[] =
 {
     0x01, 0x00, 0x00, 0x00, 0x09, 0x04, 0x00, 0x00,
     0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -327,11 +327,11 @@ static char caps_0x0d[] =
     0x00, 0x00, 0x00, 0x00
 };
 
-static char caps_0x0c[] = { 0x01, 0x00, 0x00, 0x00 };
+static const unsigned char caps_0x0c[] = { 0x01, 0x00, 0x00, 0x00 };
 
-static char caps_0x0e[] = { 0x01, 0x00, 0x00, 0x00 };
+static const unsigned char caps_0x0e[] = { 0x01, 0x00, 0x00, 0x00 };
 
-static char caps_0x10[] =
+static const unsigned char caps_0x10[] =
 {
     0xFE, 0x00, 0x04, 0x00, 0xFE, 0x00, 0x04, 0x00,
     0xFE, 0x00, 0x08, 0x00, 0xFE, 0x00, 0x08, 0x00,
@@ -345,7 +345,7 @@ static char caps_0x10[] =
 /* Output unknown capability sets */
 static int APP_CC
 rdp_rdp_out_unknown_caps(struct rdp_rdp *self, struct stream *s, int id,
-                         int length, char *caps)
+                         int length, const unsigned char *caps)
 {
     out_uint16_le(s, id);
     out_uint16_le(s, length);

sesman/chansrv/chansrv.c

@@ -55,7 +55,7 @@ static tbus g_thread_done_event = 0;
 
 static int g_use_unix_socket = 0;
 
-static char g_xrdpapi_magic[12] =
+static const unsigned char g_xrdpapi_magic[12] =
 { 0x78, 0x32, 0x10, 0x67, 0x00, 0x92, 0x30, 0x56, 0xff, 0xd8, 0xa9, 0x1f };
 
 int g_display_num = 0;

sesman/chansrv/rail.c

@@ -1148,8 +1148,8 @@ rail_data_in(struct stream *s, int chan_id, int chan_flags, int length,
     return  0;
 }
 
-static int g_crc_seed = 0xffffffff;
-static int g_crc_table[256] =
+static const unsigned int g_crc_seed = 0xffffffff;
+static const unsigned int g_crc_table[256] =
 {
     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,

xrdp/xrdp_bitmap.c

@@ -38,7 +38,7 @@
   while (0)
 
 
-static const int g_crc_table[256] =
+static const unsigned int g_crc_table[256] =
 {
     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,

xrdpapi/xrdpapi.c

@@ -53,8 +53,10 @@ static int send_init(struct wts_obj *wts);
 static int can_send(int sck, int millis);
 static int can_recv(int sck, int millis);
 
-static char g_xrdpapi_magic[12] =
-{ 0x78, 0x32, 0x10, 0x67, 0x00, 0x92, 0x30, 0x56, 0xff, 0xd8, 0xa9, 0x1f };
+static const unsigned char g_xrdpapi_magic[12] =
+{
+    0x78, 0x32, 0x10, 0x67, 0x00, 0x92, 0x30, 0x56, 0xff, 0xd8, 0xa9, 0x1f
+};
 
 /*
  * Opens a handle to the server end of a specified virtual channel - this