Keyboard.c: fix possible NULL pointer dereference

found by PVS Studio: "V522 There might be dereferencing of a potential null pointer 'keymap'."

Keyboard.c: fix possible NULL pointer dereference
7443fea6 · Ulrich Sibiller · e664d820 · 7443fea6
Commit 7443fea6 authored Jan 04, 2021 by Ulrich Sibiller
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Keyboard.c nx-X11/programs/Xserver/hw/nxagent/Keyboard.c +5 -0

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--- a/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Keyboard.c
@@ -435,6 +435,11 @@ N/A

        int len = (max_keycode - min_keycode + 1) * mapWidth;
        keymap = (KeySym *)malloc(len * sizeof(KeySym));
+        if (keymap == NULL)
+        {
+          XFreeModifiermap(modifier_keymap);
+          return -1;
+        }
        for(int i = 0; i < len; ++i)
        {
          keymap[i] = keymap64[i];