travis-ci: save prove state for the 32 bit Linux build

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 5ac07d7348c3c8b5cb4e4decf8a19cd3881b6c82..018e03308921e3b44bb75b8bc1e005424ca4fc1b 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -165,9 +165,9 @@ int read_mmfile(mmfile_t *ptr, const char *filename)
        size_t sz;
 
        if (stat(filename, &st))
-               return error("Could not stat %s", filename);
+               return error_errno("Could not stat %s", filename);
        if ((f = fopen(filename, "rb")) == NULL)
-               return error("Could not open %s", filename);
+               return error_errno("Could not open %s", filename);
        sz = xsize_t(st.st_size);
        ptr->ptr = xmalloc(sz ? sz : 1);
        if (sz && fread(ptr->ptr, sz, 1, f) != 1) {