Address valgrind warnings.

docker/debugger.Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN apt-get update
 RUN apt-get install -y gdb valgrind

include/array_base.h

@@ -27,12 +27,12 @@ class array_base {
 public:
     array_base(const uint32_t n=2) {
         size_bytes = METADATA_OVERHEAD + (n * FOR_ELE_SIZE);
-        in = new uint8_t[size_bytes];
+        in = (uint8_t *) malloc(size_bytes * sizeof *in);
         memset(in, 0, size_bytes);
     }
 
     ~array_base() {
-        delete[] in;
+        free(in);
         in = nullptr;
     }
 

include/string_utils.h

@@ -20,6 +20,7 @@ struct StringUtils {
 
     ~StringUtils() {
         //delete transliterator;
+        iconv_close(cd);
     }
 
     // Adapted from: http://stackoverflow.com/a/236180/131050

src/collection_manager.cpp

@@ -132,6 +132,8 @@ Option<bool> CollectionManager::init(Store *store, const std::string & auth_key,
         iter->Next();
     }
 
+    delete iter;
+
     return Option<bool>(true);
 }
 

src/sorted_array.cpp

@@ -9,7 +9,7 @@ void sorted_array::load(const uint32_t *sorted_array, const uint32_t array_lengt
     uint8_t *out = new uint8_t[size_required];
     uint32_t actual_size = for_compress_sorted(sorted_array, out, array_length);
 
-    delete[] in;
+    free(in);
     in = nullptr;
 
     in = out;