patch 9.0.0072: compiler warning for uninitialized variable

Problem:    Compiler warning for uninitialized variable.
Solution:   Initialize it. (John Marriott)
diff --git a/src/version.c b/src/version.c
index 2f2d540..ed01c9e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    72,
+/**/
     71,
 /**/
     70,