patch 8.2.4546: duplicate #undef

Problem:    Duplicate #undef.
Solution:   Remove one #undef. (closes #9932)
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index c8ac8d4..ed8efcf 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -1269,7 +1269,6 @@
     EMIT2(c);
     return OK;
 #undef EMIT2
-#undef EMIT2
 }
 
 /*
diff --git a/src/version.c b/src/version.c
index 01c3c32..3a29ffe 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4546,
+/**/
     4545,
 /**/
     4544,