Make perror arg be CONST to avoid warning,
and remove duplicate declaration of perror.
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@ -25,7 +25,7 @@ extern PROTO(void, bcopy,(char*,char*,int));
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extern PROTO(int, bcmp,(char *, char *, int));
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extern PROTO(void, bzero,(char *, int));
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extern char * strchr();
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extern PROTO(void, perror,(char *));
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extern PROTO(void, perror,(CONST char *));
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extern char *getenv();
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extern char *memchr();
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extern char *strrchr();
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@ -39,7 +39,6 @@ extern int strtol();
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void free();
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char *malloc();
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char *realloc();
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PROTO (void, perror, (char *s));
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extern char *strrchr();
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extern char *ctime();
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extern int _flsbuf();
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