src/utils.c: Mark is_all_digit() parameter const
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
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@ -893,7 +893,7 @@ void status_mesg (char *, char *);
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void erase_window_part (WINDOW *, int, int, int, int);
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WINDOW *popup (int, int, int, int, char *, char *, int);
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void print_in_middle (WINDOW *, int, int, int, char *);
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int is_all_digit (char *);
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int is_all_digit (const char *);
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long get_item_time (long);
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int get_item_hour (long);
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int get_item_min (long);
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@ -234,7 +234,7 @@ print_in_middle (WINDOW *win, int starty, int startx, int width, char *string)
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/* checks if a string is only made of digits */
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int
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is_all_digit (char *string)
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is_all_digit (const char *string)
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{
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for (; *string; string++)
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{
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