Mark path passed to Sys_Mkdir as const.

src/backends/unix/system.c

@@ -432,7 +432,7 @@ Sys_GetGameAPI(void *parms)
 /* ================================================================ */
 
 void
-Sys_Mkdir(char *path)
+Sys_Mkdir(const char *path)
 {
 	mkdir(path, 0755);
 }

src/backends/windows/system.c

@@ -454,7 +454,7 @@ Sys_GetGameAPI(void *parms)
 /* ======================================================================= */
 
 void
-Sys_Mkdir(char *path)
+Sys_Mkdir(const char *path)
 {
 	WCHAR wpath[MAX_OSPATH] = {0};
 	MultiByteToWideChar(CP_UTF8, 0, path, -1, wpath, MAX_OSPATH);

src/common/header/shared.h

@@ -336,7 +336,7 @@ void randk_seed(void);
 extern int curtime; /* time returned by last Sys_Milliseconds */
 
 int Sys_Milliseconds(void);
-void Sys_Mkdir(char *path);
+void Sys_Mkdir(const char *path);
 qboolean Sys_IsDir(const char *path);
 qboolean Sys_IsFile(const char *path);