Update glcanon.py

Fix overflow error when clicking on the zoomed out preview or rapidly clicking on individual lines.

Author: Sigma1912

lib/python/rs274/glcanon.py

@@ -592,9 +592,8 @@ def select(self, x, y):
 
             try:
                 buffer = glRenderMode(GL_RENDER)
-            except OverflowError:
-                self.select_buffer_size *= 2
-                continue
+            except:
+                buffer = []
             break
 
         if buffer: