viewfile() now uses case-corrected file path

Sometimes files uploaded may have the wrong case in the filebase (a different
unresolved issue), but for instances where that has happened, make those files
viewable in sbbs. This really only impacts target OSes with case-sensitive
file systems (e.g. *nix).

src/sbbs3/viewfile.cpp

@@ -86,12 +86,14 @@ int sbbs_t::viewfile(file_t* f, bool ext)
 
 /*****************************************************************************/
 /*****************************************************************************/
-bool sbbs_t::viewfile(const char* path)
+bool sbbs_t::viewfile(const char* inpath)
 {
+	char	path[MAX_PATH + 1];
     char	viewcmd[256];
     int		i;
 
-	if(!fexist(path)) {
+	SAFECOPY(path, inpath);
+	if(!fexistcase(path)) {
 		bputs(text[FileNotFound]);
 		return false; 
 	}