diff --git a/cJSON.c b/cJSON.c
index 00e87d2..e6372a7 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -220,21 +220,40 @@ typedef struct
     int offset;
 } printbuffer;
 
-static char* ensure(printbuffer *p,int needed)
+/* realloc printbuffer if necessary to have at least "needed" bytes more */
+static char* ensure(printbuffer *p, int needed)
 {
-	char *newbuffer;int newsize;
-	if (!p || !p->buffer) return 0;
-	needed+=p->offset;
-	if (needed<=p->length) return p->buffer+p->offset;
+    char *newbuffer;
+    int newsize;
+    if (!p || !p->buffer)
+    {
+        return 0;
+    }
+    needed += p->offset;
+    if (needed <= p->length)
+    {
+        return p->buffer + p->offset;
+    }
 
-	newsize=pow2gt(needed);
-	newbuffer=(char*)cJSON_malloc(newsize);
-	if (!newbuffer) {cJSON_free(p->buffer);p->length=0,p->buffer=0;return 0;}
-	if (newbuffer) memcpy(newbuffer,p->buffer,p->length);
-	cJSON_free(p->buffer);
-	p->length=newsize;
-	p->buffer=newbuffer;
-	return newbuffer+p->offset;
+    newsize = pow2gt(needed);
+    newbuffer = (char*)cJSON_malloc(newsize);
+    if (!newbuffer)
+    {
+        cJSON_free(p->buffer);
+        p->length = 0;
+        p->buffer = 0;
+
+        return 0;
+    }
+    if (newbuffer)
+    {
+        memcpy(newbuffer, p->buffer, p->length);
+    }
+    cJSON_free(p->buffer);
+    p->length = newsize;
+    p->buffer = newbuffer;
+
+    return newbuffer + p->offset;
 }
 
 static int update(printbuffer *p)