patch 7.4.1520

Problem:    Channel test: Waiting for a file to appear doesn't work.
Solution:   In waitFor() ignore errors.

src/testdir/test_channel.vim

@@ -103,9 +103,12 @@ endfunc
 " Wait for up to a second for "expr" to become true.
 func s:waitFor(expr)
   for i in range(100)
-    if eval(a:expr)
-      return
-    endif
+    try
+      if eval(a:expr)
+	return
+      endif
+    catch
+    endtry
     sleep 10m
   endfor
 endfunc

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1520,
 /**/
     1519,
 /**/