internal: unhardcode sun_path size after a6cfe7042897 (#2137)

hyprctl/main.cpp:83:5: warning: 'strncpy' size argument is too large; destination buffer has size 104, but size argument is 107 [-Wfortify-source]
    strncpy(serverAddress.sun_path, socketPath.c_str(), 107);
    ^
hyprctl/main.cpp:146:5: warning: 'strncpy' size argument is too large; destination buffer has size 104, but size argument is 107 [-Wfortify-source]
    strncpy(serverAddress.sun_path, socketPath.c_str(), 107);
    ^
src/managers/EventManager.cpp:70:9: warning: 'strncpy' size argument is too large; destination buffer has size 104, but size argument is 107 [-Wfortify-source]
        strncpy(SERVERADDRESS.sun_path, socketPath.c_str(), 107);
        ^

1 files changed, 1 insertions, 1 deletions

diff --git a/src/managers/EventManager.cpp b/src/managers/EventManager.cpp
index dd4959b8..8881b3ac 100644
--- a/src/managers/EventManager.cpp
+++ b/src/managers/EventManager.cpp
@@ -67,7 +67,7 @@ void CEventManager::startThread() {
 
         sockaddr_un SERVERADDRESS = {.sun_family = AF_UNIX};
         std::string socketPath    = "/tmp/hypr/" + g_pCompositor->m_szInstanceSignature + "/.socket2.sock";
-        strncpy(SERVERADDRESS.sun_path, socketPath.c_str(), 107);
+        strncpy(SERVERADDRESS.sun_path, socketPath.c_str(), sizeof(SERVERADDRESS.sun_path) - 1);
 
         bind(SOCKET, (sockaddr*)&SERVERADDRESS, SUN_LEN(&SERVERADDRESS));