patch 9.0.0937: forked repositories send out useless email

Problem:    Forked repositories send out useless email.
Solution:   When Coverity fails to run just ignore it. (Shane-XB-Qian,
            closes #11604)
diff --git a/src/version.c b/src/version.c
index d7c6ef1..c4d35c3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    937,
+/**/
     936,
 /**/
     935,