Core/Misc: Fix vsnprintf usage in ASSERT()

Fix vsnprintf to follow standard definition and not some old VC++ behavior, not requiring to include the '\0' character in the count parameter

(cherry picked from commit eee1f2cadf8174caca4849c22ba1fb8f12fc9e08)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/common/Debugging/Errors.cpp b/src/common/Debugging/Errors.cpp
index 7ad137715da..f44f8d9105c 100644
--- a/src/common/Debugging/Errors.cpp
+++ b/src/common/Debugging/Errors.cpp
@@ -59,7 +59,7 @@ namespace
         va_end(len);
 
         formatted.resize(length);
-        vsnprintf(&formatted[0], length, format, args);
+        vsnprintf(&formatted[0], length + 1, format, args);
 
         return formatted;
     }