geom/m46245: fix naming of kMortonCode256{X,Z} tables

This commit fixes a naming error where kMortonCode256X is used for
the z co-ordinate, and similarly for kMortonCode256Z.

tmc3/PCCMath.h

@@ -370,12 +370,12 @@ inline uint64_t
 mortonAddr(const int32_t x, const int32_t y, const int32_t z)
 {
   assert(x >= 0 && y >= 0 && z >= 0);
-  uint64_t answer = kMortonCode256X[(z >> 16) & 0xFF]
-    | kMortonCode256Y[(y >> 16) & 0xFF] | kMortonCode256Z[(x >> 16) & 0xFF];
-  answer = answer << 24 | kMortonCode256X[(z >> 8) & 0xFF]
-    | kMortonCode256Y[(y >> 8) & 0xFF] | kMortonCode256Z[(x >> 8) & 0xFF];
-  answer = answer << 24 | kMortonCode256X[z & 0xFF] | kMortonCode256Y[y & 0xFF]
-    | kMortonCode256Z[x & 0xFF];
+  uint64_t answer = kMortonCode256X[(x >> 16) & 0xFF]
+    | kMortonCode256Y[(y >> 16) & 0xFF] | kMortonCode256Z[(z >> 16) & 0xFF];
+  answer = answer << 24 | kMortonCode256X[(x >> 8) & 0xFF]
+    | kMortonCode256Y[(y >> 8) & 0xFF] | kMortonCode256Z[(z >> 8) & 0xFF];
+  answer = answer << 24 | kMortonCode256X[x & 0xFF] | kMortonCode256Y[y & 0xFF]
+    | kMortonCode256Z[z & 0xFF];
   return answer;
 }
 

tmc3/tables.cpp

@@ -297,7 +297,7 @@ const uint8_t pcc::kDualLutOccupancyCoderInit[10][32] = {
 
 //============================================================================
 
-const uint32_t pcc::kMortonCode256X[256] = {
+const uint32_t pcc::kMortonCode256Z[256] = {
   0x00000000, 0x00000001, 0x00000008, 0x00000009, 0x00000040, 0x00000041,
   0x00000048, 0x00000049, 0x00000200, 0x00000201, 0x00000208, 0x00000209,
   0x00000240, 0x00000241, 0x00000248, 0x00000249, 0x00001000, 0x00001001,
@@ -387,7 +387,7 @@ const uint32_t pcc::kMortonCode256Y[256] = {
   0x00492090, 0x00492092, 0x00492400, 0x00492402, 0x00492410, 0x00492412,
   0x00492480, 0x00492482, 0x00492490, 0x00492492};
 
-const uint32_t pcc::kMortonCode256Z[256] = {
+const uint32_t pcc::kMortonCode256X[256] = {
   0x00000000, 0x00000004, 0x00000020, 0x00000024, 0x00000100, 0x00000104,
   0x00000120, 0x00000124, 0x00000800, 0x00000804, 0x00000820, 0x00000824,
   0x00000900, 0x00000904, 0x00000920, 0x00000924, 0x00004000, 0x00004004,