Formatting.

src/monitor.c

diff --git a/src/monitor.c b/src/monitor.c
index 876cf9a..ae324ca 100644
--- a/src/monitor.c
+++ b/src/monitor.c
@@ -366,7 +366,7 @@
         return;
     }
 
-    _glfwLibrary.monitorCallback= cbfun;
+    _glfwLibrary.monitorCallback = cbfun;
 }