Making CL_CheckFiles static was stupid, why did I do that.

src/d_netfil.c

@@ -301,7 +301,7 @@ void Got_RequestFilePak(INT32 node)
 }
 
 // client check if the fileneeded aren't already loaded or on the disk
-static INT32 CL_CheckFiles(void)
+INT32 CL_CheckFiles(void)
 {
 	INT32 i, j;
 	char wadfilename[MAX_WADPATH];

src/d_netfil.h

@@ -62,6 +62,7 @@ void CL_LoadServerFiles(void);
 void SendRam(INT32 node, void *data, size_t size, freemethod_t freemethod,
 	UINT8 fileid);
 
+INT32 CL_CheckFiles(void);
 boolean CL_CheckDownloadable(void);
 boolean CL_SendRequestFile(void);
 void Got_RequestFilePak(INT32 node);