Minor changes for static analysis (#749)

re: #747
diff --git a/src/lib_json/json_value.cpp b/src/lib_json/json_value.cpp
index a3e6550..1633f49 100644
--- a/src/lib_json/json_value.cpp
+++ b/src/lib_json/json_value.cpp
@@ -931,7 +931,7 @@
   if (newSize == 0)
     clear();
   else if (newSize > oldSize)
-    (*this)[newSize - 1];
+    this->operator[](newSize - 1);
   else {
     for (ArrayIndex index = newSize; index < oldSize; ++index) {
       value_.map_->erase(index);
diff --git a/src/lib_json/json_writer.cpp b/src/lib_json/json_writer.cpp
index 456424d..5167c31 100644
--- a/src/lib_json/json_writer.cpp
+++ b/src/lib_json/json_writer.cpp
@@ -623,7 +623,8 @@
 
 StyledStreamWriter::StyledStreamWriter(JSONCPP_STRING indentation)
     : document_(NULL), rightMargin_(74), indentation_(indentation),
-      addChildValues_() {}
+      addChildValues_(), indented_(false)
+{}
 
 void StyledStreamWriter::write(JSONCPP_OSTREAM& out, const Value& root) {
   document_ = &out;