Bug#29065 mysql-test-run.pl aborts execution on missing log file from test tool

 - Make tesingt continue even if test log file does not exists


mysql-test/mysql-test-run.pl:
  Allow execution to continue even if no log file has been
  generated by the test tool - it's not a critical error

mysql-test/mysql-test-run.pl

@@ -3106,9 +3106,12 @@ sub find_testcase_skipped_reason($)
 {
   my ($tinfo)= @_;
 
+  # Set default message
+  $tinfo->{'comment'}= "Detected by testcase(no log file)";
+
   # Open mysqltest.log
-  my $F= IO::File->new($path_timefile) or
-    mtr_error("can't open file \"$path_timefile\": $!");
+  my $F= IO::File->new($path_timefile)
+    or return;
   my $reason;
 
   while ( my $line= <$F> )
@@ -3161,8 +3164,8 @@ sub analyze_testcase_failure($)
   my ($tinfo)= @_;
 
   # Open mysqltest.log
-  my $F= IO::File->new($path_timefile) or
-    mtr_error("can't open file \"$path_timefile\": $!");
+  my $F= IO::File->new($path_timefile)
+    or return;
 
   while ( my $line= <$F> )
   {