Fix compiler warning

libscdl.c: In function 'sc_dlerror':
libscdl.c:38: warning: old-style function definition


git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@5248 c6295689-39f2-0310-b995-f0e70906c6a9

src/common/libscdl.c

@@ -34,7 +34,7 @@ void *sc_dlsym(void *handle, const char *symbol)
 	return lt_dlsym((lt_dlhandle)handle, symbol);
 }
 
-const char *sc_dlerror()
+const char *sc_dlerror(void)
 {
 	return lt_dlerror();
 }