Remove one of the jumps

Author: NWilson

src/pcre2_jit_compile.c

@@ -13779,8 +13779,7 @@ lookbehind). */
 if (common->has_set_som &&
     (common->re->extra_options & PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK) == 0)
   {
-  struct sljit_jump *bad_som_behind;
-  struct sljit_jump *bad_som_ahead;
+  struct sljit_jump *do_return;
   struct sljit_jump *fallthrough;
 
   if (HAS_VIRTUAL_REGISTERS)
@@ -13794,13 +13793,11 @@ if (common->has_set_som &&
     }
 
   /* (ovector[0] < jit_arguments->str)? */
-  bad_som_behind = CMP(SLJIT_LESS, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), TMP1, 0);
-  /* (ovector[0] > STR_PTR)?  NB. ovector[1] hasn't yet been set to STR_PTR. */
-  bad_som_ahead = CMP(SLJIT_GREATER, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), STR_PTR, 0);
-  fallthrough = JUMP(SLJIT_JUMP);
+  do_return = CMP(SLJIT_LESS, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), TMP1, 0);
+  /* (ovector[0] <= STR_PTR)?  NB. ovector[1] hasn't yet been set to STR_PTR. */
+  fallthrough = CMP(SLJIT_LESS_EQUAL, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), STR_PTR, 0);
 
-  JUMPHERE(bad_som_behind);
-  JUMPHERE(bad_som_ahead);
+  JUMPHERE(do_return);
   OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE2_ERROR_BAD_BACKSLASH_K);
   add_jump(compiler, &common->abort, JUMP(SLJIT_JUMP));