Fix: Memory corruption on Windows due to missing null-terminator byte in getExecutableDir()

[mrt0a]

Description:
On Windows environments, the application terminates unexpectedly due to memory corruption. This is caused by an insufficient buffer allocation size when copying the executable path string in qode_helper.cc.

Cause:
In getExecutableDir(), executablePath.length() is used to allocate the exePath buffer. However, std::string::length() does not include the null-terminator (\0). When strcpy(exePath, executablePath.c_str()) is called, it writes the null-terminator past the allocated memory boundary, resulting in a 1-byte buffer overflow (memory corruption).
This bug is located here:

qodejs/qode/helpers/qode_helper.cc

Lines 45 to 53 in c611142

	std::string getExecutableDir() {
	std::string executablePath = getExecutablePath();
	char* exePath = new char[executablePath.length()];
	strcpy(exePath, executablePath.c_str());
	PathRemoveFileSpecA(exePath);
	std::string directory = std::string(exePath);
	delete[] exePath;
	return directory;
	}

Proposed Fix
We need to allocate executablePath.length() + 1 bytes to safely accommodate the null-terminator.

diff --git a/qode/helpers/qode_helper.cc b/qode/helpers/qode_helper.cc
index 89f357154e..e1c699fefe 100644
--- a/qode/helpers/qode_helper.cc
+++ b/qode/helpers/qode_helper.cc
@@ -44,7 +44,7 @@ std::string getExecutablePath() {
 
 std::string getExecutableDir() {
     std::string executablePath = getExecutablePath();
-    char* exePath = new char[executablePath.length()];
+    char* exePath = new char[executablePath.length() + 1];
     strcpy(exePath, executablePath.c_str());
     PathRemoveFileSpecA(exePath);
     std::string directory = std::string(exePath);

Environment:
OS: Windows