Fix infinite loop on small files with progress reporting (fixes #230)

Turns out you can keep adding zero to a number over and over again and
it just doesn't get any bigger. Who would have known?

1 files changed, 2 insertions, 1 deletions

diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc
index 447b6627..30ba6f1f 100644
--- a/libqpdf/QPDFWriter.cc
+++ b/libqpdf/QPDFWriter.cc
@@ -3357,9 +3357,10 @@ QPDFWriter::indicateProgress(bool decrement, bool finished)
                                 this->m->events_expected)));
         this->m->progress_reporter->reportProgress(percentage);
     }
+    int increment = std::max(1, (this->m->events_expected / 100));
     while (this->m->events_seen >= this->m->next_progress_report)
     {
-        this->m->next_progress_report += (this->m->events_expected / 100);
+        this->m->next_progress_report += increment;
     }
 }