Fix problem with argument being "const void *".

git-svn-id: http://root.cern.ch/svn/root/trunk@39459 27541ba8-7e3a-0410-8455-c3a389f83636

cint/cint/src/input.cxx

@@ -229,7 +229,7 @@ char *G__input(const char *prompt)
     /* memory parity checker can not handle the pointer malloced in readlie */
     G__DUMMY_Free((void*)pchar);
 #else
-    free(pchar);
+    free((void*)pchar);
 #endif
     if(line[0]!='\0') {
       G__input_history(&state,line);