i3 - improved tiling WM

Improve error message when a full_text property is missing

Patch status: needinfo

Patch by Ingo Bürk

To apply this patch, use:
curl http://cr.i3wm.org/patch/684/raw.patch | git am

b/i3bar/src/child.c

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@@ -233,7 +233,7 @@ static int stdin_end_map(void *context) {
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     /* Ensure we have a full_text set, so that when it is missing (or null),
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      * i3bar doesn’t crash and the user gets an annoying message. */
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     if (!new_block->full_text)
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-        new_block->full_text = i3string_from_utf8("SPEC VIOLATION (null)");
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+        new_block->full_text = i3string_from_utf8("ERROR No full_text specified!");
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     if (new_block->urgent)
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         ctx->has_urgent = true;
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     TAILQ_INSERT_TAIL(&statusline_head, new_block, blocks);