i3 - improved tiling WM

Replace '1' with "EXIT_FAILURE"

Patch status: merged

Patch by TheKK

To apply this patch, use:
curl http://cr.i3wm.org/patch/473/raw.patch | git am

b/i3lock.c

13 
@@ -664,7 +664,7 @@ int main(int argc, char *argv[]) {
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     };
15
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     if ((username = getenv("USER")) == NULL)
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-        errx(1, "USER environment variable not set, please set it.\n");
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+        errx(EXIT_FAILURE, "USER environment variable not set, please set it.\n");
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     while ((o = getopt_long(argc, argv, "hvnbdc:p:ui:te", longopts, &optind)) != -1) {
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         switch (o) {
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@@ -687,7 +687,7 @@ int main(int argc, char *argv[]) {
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                 arg++;
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             if (strlen(arg) != 6 || sscanf(arg, "%06[0-9a-fA-F]", color) != 1)
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-                errx(1, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
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+                errx(EXIT_FAILURE, "color is invalid, it must be given in 3-byte hexadecimal format: rrggbb\n");
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             break;
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         }
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@@ -706,7 +706,7 @@ int main(int argc, char *argv[]) {
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             } else if (!strcmp(optarg, "default")) {
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                 curs_choice = CURS_DEFAULT;
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             } else {
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-                errx(1, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
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+                errx(EXIT_FAILURE, "i3lock: Invalid pointer type given. Expected one of \"win\" or \"default\".\n");
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             }
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             break;
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         case 'e':
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@@ -717,7 +717,7 @@ int main(int argc, char *argv[]) {
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                 debug_mode = true;
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             break;
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         default:
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-            errx(1, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
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+            errx(EXIT_FAILURE, "Syntax: i3lock [-v] [-n] [-b] [-d] [-c color] [-u] [-p win|default]"
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             " [-i image.png] [-t] [-e]"
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             );
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         }