ClangFormat: apply to source, most of intern

Apply clang format as proposed in T53211.

For details on usage and instructions for migrating branches
without conflicts, see:

https://wiki.blender.org/wiki/Tools/ClangFormat

intern/guardedalloc/cpp/mallocn.cpp

@@ -18,7 +18,6 @@
  * \ingroup MEM
  */
 
-
 #include <new>
 #include "../MEM_guardedalloc.h"
 
@@ -28,33 +27,31 @@ void *operator new[](size_t size, const char *str) throw(std::bad_alloc);
 /* not default but can be used when needing to set a string */
 void *operator new(size_t size, const char *str) throw(std::bad_alloc)
 {
-	return MEM_mallocN(size, str);
+  return MEM_mallocN(size, str);
 }
 void *operator new[](size_t size, const char *str) throw(std::bad_alloc)
 {
-	return MEM_mallocN(size, str);
+  return MEM_mallocN(size, str);
 }
 
-
 void *operator new(size_t size) throw(std::bad_alloc)
 {
-	return MEM_mallocN(size, "C++/anonymous");
+  return MEM_mallocN(size, "C++/anonymous");
 }
 void *operator new[](size_t size) throw(std::bad_alloc)
 {
-	return MEM_mallocN(size, "C++/anonymous[]");
+  return MEM_mallocN(size, "C++/anonymous[]");
 }
 
-
 void operator delete(void *p) throw()
 {
-	/* delete NULL is valid in c++ */
-	if (p)
-		MEM_freeN(p);
+  /* delete NULL is valid in c++ */
+  if (p)
+    MEM_freeN(p);
 }
 void operator delete[](void *p) throw()
 {
-	/* delete NULL is valid in c++ */
-	if (p)
-		MEM_freeN(p);
+  /* delete NULL is valid in c++ */
+  if (p)
+    MEM_freeN(p);
 }