math: include cstring for memset

 fixup name too

Author: vaxerski

src/helpers/math/Math.cpp

@@ -1,5 +1,6 @@
 #include "Math.hpp"
 #include <unordered_map>
+#include <cstring>
 
 Hyprutils::Math::eTransform wlTransformToHyprutils(wl_output_transform t) {
     switch (t) {
@@ -208,7 +209,7 @@ void projectBox(float mat[9], CBox& box, eTransform transform, float rotation, c
         matrixTranslate(mat, -width / 2, -height / 2);
     }
 
-    wlr_matrix_scale(mat, width, height);
+    matrixScale(mat, width, height);
 
     if (transform != HYPRUTILS_TRANSFORM_NORMAL) {
         matrixTranslate(mat, 0.5, 0.5);