SPEC-2513 Fixes to enable w4701 (#1105)

* Some fixes

* more fixes

* fixes for debug

Code/Sandbox/Editor/Util/AffineParts.cpp

@@ -157,7 +157,7 @@ static  Quatern Qt_FromMatrix(HMatrix mat)
      * |w| is greater than 1/2, which is as small as a largest component can be.
      * Otherwise, the largest diagonal entry corresponds to the largest of |x|,
      * |y|, or |z|, one of which must be larger than |w|, and at least 1/2. */
-    Quatern qu;
+    Quatern qu = { 0.0f, 0.0f, 0.0f, 1.0f };
     double tr, s;
 
     tr = mat[X][X] + mat[Y][Y] + mat[Z][Z];
@@ -531,7 +531,7 @@ Quatern snuggle(Quatern q, HVect* k)
 #define swap(a, i, j) {a[3] = a[i]; a[i] = a[j]; a[j] = a[3]; }
 #define cycle(a, p)  if (p) {a[3] = a[0]; a[0] = a[1]; a[1] = a[2]; a[2] = a[3]; } \
     else   {a[3] = a[2]; a[2] = a[1]; a[1] = a[0]; a[0] = a[3]; }
-    Quatern p;
+    Quatern p = { 0.0f, 0.0f, 0.0f, 1.0f };
     float ka[4];
     int i, turn = -1;
     ka[X] = k->x;