tiny fixes to logging

Author: noajshu

src/tesseract.cc

@@ -457,6 +457,9 @@ void TesseractDecoder::decode_to_errors(const std::vector<uint64_t>& detections,
       ++num_pq_pushed;
 
       if (num_pq_pushed > config.pqlimit) {
+        if (config.verbose) {
+          std::cout << "setting low confidence flag" << std::endl;
+        }
         low_confidence_flag = true;
         return;
       }

src/visualization.cc

@@ -45,7 +45,7 @@ void Visualizer::write(const char* fpath) {
   FILE* fout = fopen(fpath, "w");
 
   for (std::string& line : lines) {
-    fprintf(fout, line.c_str());
+    fprintf(fout, "%s", line.c_str());
     fputs("\n", fout);
   }