Update m4

[yaz-moved-to-github.git] / m4

diff --git a/m4 b/m4
index 1680e50..58092fa 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 1680e50638711cfd57f952d44def5d46c3f09291
+Subproject commit 58092fa51c66ace9beb4b058854266c7134f18a6