Smaller equalExact (probably should just get rid of this tbh)

Fix for ClosestPointOnLine

common/mathlib.cc

@@ -459,6 +459,10 @@ qvec3f ClosestPointOnLine(const qvec3f &v, const qvec3f &w, const qvec3f &p)
     const qvec3f vp = p - v;
     const qvec3f vw_norm = qv::normalize(w - v);
 
+    if (qv::emptyExact(vw_norm)) {
+        return p;
+    }
+
     const float vp_scalarproj = qv::dot(vp, vw_norm);
 
     const qvec3f p_projected_on_vw = v + (vw_norm * vp_scalarproj);

include/common/qvec.hh

@@ -470,11 +470,7 @@ template<size_t N, class T>
 template<size_t N, class T>
 [[nodiscard]] constexpr bool equalExact(const qvec<T, N> &v1, const qvec<T, N> &v2)
 {
-    for (size_t i = 0; i < N; i++) {
-        if (v1[i] != v2[i])
-            return false;
-    }
-    return true;
+    return v1 == v2;
 }
 
 template<size_t N, class T>