egl/dri2: Fix codestyle in a comment

Pointed out by Kenneth Graunke. Trivial fix.
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 8ed1dda..f4c29da 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -2234,7 +2234,8 @@
       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
       if (!dri2_sync->fence) {
          /* Why did it fail? DRI doesn't return an error code, so we emit
-          * a generic EGL error that doesn't communicate user error. */
+          * a generic EGL error that doesn't communicate user error.
+          */
          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
          free(dri2_sync);
          return NULL;