[elpa] externals/compat 57e7792aa4 2/5: Allow for compat macros to be evaluated in a file-less buffer

[ELPA Syncer]

branch: externals/compat
commit 57e7792aa48a0139f821b978c87ebb9e792ccf44
Author: Philip Kaludercic <philipk@posteo.net>
Commit: Philip Kaludercic <philipk@posteo.net>

    Allow for compat macros to be evaluated in a file-less buffer
---
 compat-macs.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compat-macs.el b/compat-macs.el
index ab60e0204f..4d50745e9b 100644
--- a/compat-macs.el
+++ b/compat-macs.el
@@ -79,7 +79,8 @@ TYPE is used to set the symbol property `compat-type' for 
NAME."
                                       (buffer-file-name))))
                         ;; Guess the version from the file the macro is
                         ;; being defined in.
-                        (and (string-match
+                        (and file
+                             (string-match
                               
"compat-\\([[:digit:]]+\\.[[:digit:]]+\\)\\.\\(?:elc?\\)\\'"
                               file)
                              (match-string 1 file)))))