fixes #21 - fix compilation error on Mac OS X 10.8.5

Author: d99kris

src/heapusage

@@ -47,7 +47,7 @@ showusage()
 
 showversion()
 {
-  echo "heapusage v2.15"
+  echo "heapusage v2.16"
   echo ""
   echo "Copyright (C) 2017-2025 Kristofer Berggren"
   echo ""

src/heapusage.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH HEAPUSAGE "1" "April 2025" "heapusage v2.15" "User Commands"
+.TH HEAPUSAGE "1" "May 2025" "heapusage v2.16" "User Commands"
 .SH NAME
 heapusage \- find memory leaks in applications
 .SH SYNOPSIS

tests/ex003.cpp

@@ -15,9 +15,9 @@ class Simple {
 
 /**
  * @brief Convert std::string to char *
- * 
- * @param str 
- * @return char* 
+ *
+ * @param str
+ * @return char*
  */
 char * string_to_char(const std::string& str){
     char * cstr = new char [str.length()+1];
@@ -27,8 +27,8 @@ char * string_to_char(const std::string& str){
 
 /**
  * @brief Instantiate C++ vector, unique pointer, raw pointer
- * 
- * @return int 
+ *
+ * @return int
  */
 int main() {
     /* vector - part 1 */
@@ -55,5 +55,5 @@ int main() {
     (void)_hello;
     // do not free: delete _hello;
 
-    return EXIT_SUCCESS;
+    return 0;
 }