Fix SvREFCNT_dec doc typo

diff --git a/sv.h b/sv.h
index 1eb8f1f..8b07ee9 100644 (file)
--- a/sv.h
+++ b/sv.h
@@ -284,7 +284,7 @@ to return a meaningful value, or check for NULLness, so it's smaller
 and faster.
 
 =for apidoc Am|void|SvREFCNT_dec|SV* sv
-Decrements the reference count of the given SV. I<sv> may be be NULL.
+Decrements the reference count of the given SV. I<sv> may be NULL.
 
 =for apidoc Am|void|SvREFCNT_dec_NN|SV* sv
 Same as SvREFCNT_dec, but can only be used if you know I<sv>