patch 8.2.5145: exit test causes spurious valgrind reports

Problem:    Exit test causes spurious valgrind reports.
Solution:   Skip test.  Add CheckNotValgrind.

src/testdir/check.vim

@@ -217,6 +217,14 @@ func CheckNotAsan()
   endif
 endfunc
 
+" Command to check for not running under valgrind
+command CheckNotValgrind call CheckNotValgrind()
+func CheckNotValgrind()
+  if RunningWithValgrind()
+    throw 'Skipped: does not work well with valgrind'
+  endif
+endfunc
+
 " Command to check for X11 based GUI
 command CheckX11BasedGui call CheckX11BasedGui()
 func CheckX11BasedGui()

src/testdir/test_channel.vim

@@ -1793,9 +1793,7 @@ endfunc
 
 func Test_job_stop_immediately()
   " With valgrind this causes spurious leak reports
-  if RunningWithValgrind()
+  CheckNotValgrind
-    return
-  endif
 
   let g:job = job_start([s:python, '-c', 'import time;time.sleep(10)'])
   try

src/testdir/test_exit.vim

@@ -115,6 +115,7 @@ func Test_exit_error_reading_input()
   CheckNotMSWindows
   " The early exit causes memory not to be freed somehow
   CheckNotAsan
+  CheckNotValgrind
 
   call writefile([":au VimLeave * call writefile(['l = ' .. v:exiting], 'Xtestout')", ":tabnew", "q:"], 'Xscript', 'b')
 

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5145,
 /**/
     5144,
 /**/