main: handle the case when $HOME is empty

Suggested by @itchyny in universal-ctags#2384. When $HOME is set but it is an empty string,
masatake · Dec 23, 2019 · fc533cd · fc533cd
1 parent 0a813e5
commit fc533cd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/main/options.c b/main/options.c
@@ -3522,7 +3522,7 @@ static char* prependEnvvar (const char *path, const char* envvar)
 	char *full_path = NULL;
 
 	const char* const envval = getenv (envvar);
-	if (envval)
+	if (envval && strlen (envval))
 		full_path = combinePathAndFile(envval, path);
 
 	return full_path;