Fix bug in VERSION conditional test in DFA matching.

ChangeLog

@@ -114,6 +114,10 @@ the option applies only to unrecognized or malformed escape sequences.
 
 28. Fix word boundary in JIT compiler. Patch by Mike Munday.
 
+29. The pcre2_dfa_match() function was incorrectly handling conditional version
+tests such as (?(VERSION>=0)...) when the version test was true. Incorrect 
+processing or a crash could result.
+
 
 Version 10.32 10-September-2018
 -------------------------------

src/pcre2_dfa_match.c

@@ -2760,7 +2760,7 @@ for (;;)
         /* There is also an always-true condition */
 
         else if (condcode == OP_TRUE)
-          { ADD_ACTIVE(state_offset + LINK_SIZE + 2 + IMM2_SIZE, 0); }
+          { ADD_ACTIVE(state_offset + LINK_SIZE + 2, 0); }
 
         /* The only supported version of OP_RREF is for the value RREF_ANY,
         which means "test if in any recursion". We can't test for specifically

testdata/testinput6

@@ -4962,4 +4962,14 @@
 /foobar/g
     the foobar thing foobar again\=copy_matched_subject
 
+/(?(VERSION>=0)^B0W)/
+    B0W-W0W
+\= Expect no match
+    0
+
+/(?(VERSION>=1000)^B0W|W0W)/
+    B0W-W0W
+\= Expect no match
+    0
+
 # End of testinput6

testdata/testoutput6

@@ -7794,4 +7794,18 @@ No match
  0: foobar
  0: foobar
 
+/(?(VERSION>=0)^B0W)/
+    B0W-W0W
+ 0: B0W
+\= Expect no match
+    0
+No match
+
+/(?(VERSION>=1000)^B0W|W0W)/
+    B0W-W0W
+ 0: W0W
+\= Expect no match
+    0
+No match
+
 # End of testinput6