Unfixed spacing

From @ozkan: Except for line 2537, all those trailing whitespace are from original code which had left in as-is in case we want to upgrade to a newer version more easily.

src/stdlib/SDL_malloc.c

@@ -397,9 +397,9 @@ MALLINFO_FIELD_TYPE        default: size_t
   size_t. The value is used only if  HAVE_USR_INCLUDE_MALLOC_H is not set
 
 REALLOC_ZERO_BYTES_FREES    default: not defined
-  This should be set if a call to realloc with zero bytes should
-  be the same as a call to free. Some people think it should. Otherwise,
-  since this malloc returns a unique pointer for malloc(0), so does
+  This should be set if a call to realloc with zero bytes should 
+  be the same as a call to free. Some people think it should. Otherwise, 
+  since this malloc returns a unique pointer for malloc(0), so does 
   realloc(p, 0).
 
 LACKS_UNISTD_H, LACKS_FCNTL_H, LACKS_SYS_PARAM_H, LACKS_SYS_MMAN_H
@@ -3575,7 +3575,7 @@ static void* sys_alloc(mstate m, size_t nb) {
       m->seg.sflags = mmap_flag;
       m->magic = mparams.magic;
       init_bins(m);
-      if (is_global(m))
+      if (is_global(m)) 
         init_top(m, (mchunkptr)tbase, tsize - TOP_FOOT_SIZE);
       else {
         /* Offset top by embedded malloc_state */
@@ -3726,7 +3726,7 @@ static int sys_trim(mstate m, size_t pad) {
     }
 
     /* Unmap any unused mmapped segments */
-    if (HAVE_MMAP)
+    if (HAVE_MMAP) 
       released += release_unused_segments(m);
 
     /* On failure, disable autotrim to avoid repeated failed future calls */
@@ -3934,7 +3934,7 @@ static void* internal_memalign(mstate m, size_t alignment, size_t bytes) {
     while (a < alignment) a <<= 1;
     alignment = a;
   }
-
+  
   if (bytes >= MAX_REQUEST - alignment) {
     if (m != 0)  { /* Test isn't needed but avoids compiler warning */
       MALLOC_FAILURE_ACTION;
@@ -5179,7 +5179,7 @@ History:
     Trial version Fri Aug 28 13:14:29 1992  Doug Lea  (dl at g.oswego.edu)
       * Based loosely on libg++-1.2X malloc. (It retains some of the overall
          structure of old version,  but most details differ.)
-
+ 
 */
 
 #endif /* !HAVE_MALLOC */