patch 9.1.0073: Looping over modifier_keys_table unnecessarily

Problem:  Looping over modifier_keys_table[] unnecessarily with only
          MOD_MASK_ALT or MOD_MASK_CMD, as modifier_keys_table[] only
          contains MOD_MASK_SHIFT and MOD_MASK_CTRL, and the loop won't
          do anything.
Solution: Remove MOD_MASK_ALT and MOD_MASK_CMD from the condition.
          (zeertzjq)

closes: #13963

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 653533c..0dfa2d8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    73,
+/**/
     72,
 /**/
     71,