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diff --git a/misc.c b/misc.c
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index 43e93a2..178fda9 100644
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--- a/misc.c
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+++ b/misc.c
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@@ -56,6 +56,8 @@ register const char *str;
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 {
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   register char *cp;
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+  if(str == NULL)
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+    Panic(0, "SaveStr() received NULL - possibly failed crypt()");
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   if ((cp = malloc(strlen(str) + 1)) == NULL)
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     Panic(0, "%s", strnomem);
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   else