make get_key() result const char *, so that it is not modified
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@@ -41,7 +41,7 @@ MODULE_EXPORT void svgalib_drv_vbar (Driver *drvthis, int x, int y, int len, int
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MODULE_EXPORT void svgalib_drv_hbar (Driver *drvthis, int x, int y, int len, int promille, int pattern);
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MODULE_EXPORT void svgalib_drv_num (Driver *drvthis, int x, int num);
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MODULE_EXPORT char * svgalib_drv_get_key (Driver *drvthis);
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MODULE_EXPORT const char * svgalib_drv_get_key (Driver *drvthis);
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MODULE_EXPORT int svgalib_drv_get_contrast (Driver *drvthis);
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MODULE_EXPORT void svgalib_drv_set_contrast (Driver *drvthis, int promille);
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