Fixed map iterator

Src/IACoreTest/imp/cpp/Main.cpp

@@ -2,6 +2,7 @@
 #include <iacore/file.hpp>
 
 #include <iacore/vector.hpp>
+#include <iacore/map.hpp>
 
 using namespace ia;
 
@@ -18,5 +19,16 @@ int main(int argc, char* argv[])
 
     print(v1);
 
+    List<int> l1;
+
+    Map<String, int> m1;
+    m1["sdd"] = 2;
+    m1["bx"] = 5;
+
+    for(const auto& v: m1)
+    {
+        printf("%s, %i\n", v->Key.c_str(), v->Value);
+    }
+
     return 0;
 }