Fix typo in JSONCPP_USE_SECURE_MEMORY vs JSONCPP_USING_SECURE_MEMORY (#1567)

include/json/config.h

@@ -127,7 +127,7 @@ using LargestUInt = UInt64;
 
 template <typename T>
 using Allocator =
-    typename std::conditional<JSONCPP_USING_SECURE_MEMORY, SecureAllocator<T>,
+    typename std::conditional<JSONCPP_USE_SECURE_MEMORY, SecureAllocator<T>,
                               std::allocator<T>>::type;
 using String = std::basic_string<char, std::char_traits<char>, Allocator<char>>;
 using IStringStream =

include/json/value.h

@@ -375,7 +375,7 @@ public:
   int compare(const Value& other) const;
 
   const char* asCString() const; ///< Embedded zeroes could cause you trouble!
-#if JSONCPP_USING_SECURE_MEMORY
+#if JSONCPP_USE_SECURE_MEMORY
   unsigned getCStringLength() const; // Allows you to understand the length of
                                      // the CString
 #endif

include/json/version.h

@@ -19,7 +19,7 @@
    (JSONCPP_VERSION_PATCH << 8))
 
 #if !defined(JSONCPP_USE_SECURE_MEMORY)
-#define JSONCPP_USING_SECURE_MEMORY 0
+#define JSONCPP_USE_SECURE_MEMORY 0
 #endif
 // If non-zero, the library zeroes any memory that it has allocated before
 // it frees its memory.