From 9a5ed19cf690547e4e342f5385341ed2ab79aa15 Mon Sep 17 00:00:00 2001
From: Raf Schietekat <rfschtkt@users.noreply.github.com>
Date: Fri, 12 May 2017 23:09:44 +0200
Subject: [PATCH 1/2] Issue #529: cleanup

---
 dict/dict.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dict/dict.cpp b/dict/dict.cpp
index 0c955a3f77..96a1d4531f 100644
--- a/dict/dict.cpp
+++ b/dict/dict.cpp
@@ -241,11 +241,12 @@ void Dict::Load(const STRING &lang, TessdataManager *data_file) {
   if (load_bigram_dawg) {
     bigram_dawg_ = dawg_cache_->GetSquishedDawg(lang, TESSDATA_BIGRAM_DAWG,
                                                 dawg_debug_level, data_file);
+    if (bigram_dawg_) dawgs_ += bigram_dawg_;
   }
   if (load_freq_dawg) {
     freq_dawg_ = dawg_cache_->GetSquishedDawg(lang, TESSDATA_FREQ_DAWG,
                                               dawg_debug_level, data_file);
-    if (freq_dawg_) { dawgs_ += freq_dawg_; }
+    if (freq_dawg_) dawgs_ += freq_dawg_;
   }
   if (load_unambig_dawg) {
     unambig_dawg_ = dawg_cache_->GetSquishedDawg(lang, TESSDATA_UNAMBIG_DAWG,
@@ -351,7 +352,6 @@ void Dict::End() {
       delete dawgs_[i];
     }
   }
-  dawg_cache_->FreeDawg(bigram_dawg_);
   if (dawg_cache_is_ours_) {
     delete dawg_cache_;
     dawg_cache_ = NULL;

From b4cf46697fd3975a6b8d75a50dc5b78b50ce7413 Mon Sep 17 00:00:00 2001
From: Raf Schietekat <rfschtkt@users.noreply.github.com>
Date: Sat, 13 May 2017 08:42:43 +0200
Subject: [PATCH 2/2] Issue #529: inside main() use return rather than exit

---
 api/tesseractmain.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/api/tesseractmain.cpp b/api/tesseractmain.cpp
index f1fe2fb9b6..71fd74f1f2 100644
--- a/api/tesseractmain.cpp
+++ b/api/tesseractmain.cpp
@@ -440,14 +440,14 @@ int main(int argc, char** argv) {
                              argc - arg_i, &vars_vec, &vars_values, false);
   if (init_failed) {
     fprintf(stderr, "Could not initialize tesseract.\n");
-    exit(1);
+    return EXIT_FAILURE;
   }
 
   SetVariablesFromCLArgs(&api, argc, argv);
 
   if (list_langs) {
     PrintLangsList(&api);
-    exit(0);
+    return EXIT_SUCCESS;
   }
 
   if (print_parameters) {
@@ -455,18 +455,18 @@ int main(int argc, char** argv) {
      fprintf(stdout, "Tesseract parameters:\n");
      api.PrintVariables(fout);
      api.End();
-     exit(0);
+     return EXIT_SUCCESS;
   }
 
   FixPageSegMode(&api, pagesegmode);
 
   if (pagesegmode == tesseract::PSM_AUTO_ONLY) {
-    int ret_val = 0;
+    int ret_val = EXIT_SUCCESS;
 
     Pix* pixs = pixRead(image);
     if (!pixs) {
       fprintf(stderr, "Cannot open input file: %s\n", image);
-      exit(2);
+      return 2;
     }
 
     api.SetImage(pixs);
@@ -484,13 +484,13 @@ int main(int argc, char** argv) {
           "Deskew angle: %.4f\n",
           orientation, direction, order, deskew_angle);
     } else {
-      ret_val = 1;
+      ret_val = EXIT_FAILURE;
     }
 
     delete it;
 
     pixDestroy(&pixs);
-    exit(ret_val);
+    return ret_val;
   }
 
   // set in_training_mode to true when using one of these configs:
@@ -515,10 +515,11 @@ int main(int argc, char** argv) {
     bool succeed = api.ProcessPages(image, NULL, 0, renderers[0]);
     if (!succeed) {
       fprintf(stderr, "Error during processing.\n");
-      exit(1);
+      return EXIT_FAILURE;
     }
   }
 
   PERF_COUNT_END
-  return 0;                      // Normal exit
+
+  return EXIT_SUCCESS;
 }