Cleanup: use '#if 0' for commented code-block

intern/cycles/kernel/svm/svm_geometry.h

@@ -220,11 +220,13 @@ ccl_device void svm_node_hair_info(
       stack_store_float(stack, out_offset, data);
       break;
     }
-    /*case NODE_INFO_CURVE_FADE: {
+#  if 0
+    case NODE_INFO_CURVE_FADE: {
       data = sd->curve_transparency;
       stack_store_float(stack, out_offset, data);
       break;
-    }*/
+    }
+#  endif
     case NODE_INFO_CURVE_TANGENT_NORMAL: {
       data3 = curve_tangent_normal(kg, sd);
       stack_store_float3(stack, out_offset, data3);

intern/cycles/render/nodes.cpp

@@ -4425,12 +4425,12 @@ void HairInfoNode::compile(SVMCompiler &compiler)
   if (!out->links.empty()) {
     compiler.add_node(NODE_HAIR_INFO, NODE_INFO_CURVE_TANGENT_NORMAL, compiler.stack_assign(out));
   }
-
-  /*out = output("Fade");
+#if 0
+  out = output("Fade");
   if(!out->links.empty()) {
     compiler.add_node(NODE_HAIR_INFO, NODE_INFO_CURVE_FADE, compiler.stack_assign(out));
-  }*/
-
+  }
+#endif
   out = output("Random");
   if (!out->links.empty()) {
     int attr = compiler.attribute(ATTR_STD_CURVE_RANDOM);

intern/ghost/intern/GHOST_SystemCocoa.mm

@@ -553,10 +553,12 @@ GHOST_TSuccess GHOST_SystemCocoa::init()
     // ProcessSerialNumber psn;
 
     // Carbon stuff to move window & menu to foreground
-    /*if (!GetCurrentProcess(&psn)) {
+#if 0
+    if (!GetCurrentProcess(&psn)) {
       TransformProcessType(&psn, kProcessTransformToForegroundApplication);
       SetFrontProcess(&psn);
-    }*/
+    }
+#endif
 
     @autoreleasepool {
       [NSApplication sharedApplication];  // initializes   NSApp

intern/mikktspace/mikktspace.c

@@ -425,14 +425,15 @@ tbool genTangSpace(const SMikkTSpaceContext *pContext, const float fAngularThres
   index = 0;
   for (f = 0; f < iNrFaces; f++) {
     const int verts = pContext->m_pInterface->m_getNumVerticesOfFace(pContext, f);
-    if (verts != 3 && verts != 4)
+    if (verts != 3 && verts != 4) {
       continue;
+    }
 
     // I've decided to let degenerate triangles and group-with-anythings
     // vary between left/right hand coordinate systems at the vertices.
     // All healthy triangles on the other hand are built to always be either or.
-
-    /*// force the coordinate system orientation to be uniform for every face.
+#if 0
+    // force the coordinate system orientation to be uniform for every face.
     // (this is already the case for good triangles but not for
     // degenerate ones and those with bGroupWithAnything==true)
     bool bOrient = psTspace[index].bOrient;
@@ -447,7 +448,8 @@ tbool genTangSpace(const SMikkTSpaceContext *pContext, const float fAngularThres
         else ++i;
       }
       if (!bNotFound) bOrient = psTspace[index+i].bOrient;
-    }*/
+    }
+#endif
 
     // set data
     for (i = 0; i < verts; i++) {