Fix typo in spm prototype declaration.

src/util-spm-bm.h

@@ -43,7 +43,7 @@ void BoyerMooreCtxToNocase(BmCtx *, uint8_t *, uint16_t);
 void PreBmBc(const uint8_t *x, uint16_t m, uint16_t *bmBc);
 void BoyerMooreSuffixes(const uint8_t *x, uint16_t m, uint16_t *suff);
 int PreBmGs(const uint8_t *, uint16_t, uint16_t *);
-uint8_t *BoyerMoore(uint8_t *x, int16_t m, uint8_t *y, int32_t n, uint16_t *bmGs, uint16_t *bmBc);
+uint8_t *BoyerMoore(uint8_t *x, uint16_t m, uint8_t *y, int32_t n, uint16_t *bmGs, uint16_t *bmBc);
 void PreBmBcNocase(const uint8_t *x, uint16_t m, uint16_t *bmBc);
 void BoyerMooreSuffixesNocase(const uint8_t *x, uint16_t m, uint16_t *suff);
 void PreBmGsNocase(const uint8_t *x, uint16_t m, uint16_t *bmGs);