Updated code to match other plugins

Author: radarhere

src/PIL/GbrImagePlugin.py

@@ -84,9 +84,12 @@ def _open(self):
         self._data_size = width * height * color_depth
 
     def load(self):
-        if not self.im:
-            self.im = Image.core.new(self.mode, self.size)
-            self.frombytes(self.fp.read(self._data_size))
+        if self.im:
+            # Already loaded
+            return
+
+        self.im = Image.core.new(self.mode, self.size)
+        self.frombytes(self.fp.read(self._data_size))
 
 
 #