tcg: Cleanup trailing whitespace

Remove whitespace at end of line, plus one place this also
highlights some missing braces.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/tcg.c

@@ -517,10 +517,11 @@ void *tcg_malloc_internal(TCGContext *s, int size)
                 p = g_malloc(sizeof(TCGPool) + pool_size);
                 p->size = pool_size;
                 p->next = NULL;
-                if (s->pool_current) 
+                if (s->pool_current) {
                     s->pool_current->next = p;
-                else
+                } else {
                     s->pool_first = p;
+                }
             } else {
                 p = p->next;
             }