cgraph: avoid accessing agxbuf internals in the scanner

This eases some upcoming changes to the internal structure of the `agxbuf` type.
The trailing calls to `agxbclear` are removed because they are no longer
necessary; the `agxbuse` call does the same thing.

Gitlab: #2302

diff --git a/lib/cgraph/scan.l b/lib/cgraph/scan.l
index 72be9b3d09c4844f4b8495168b2f670fa63f79c6..20fbd36ae2f603a85581b1209853fdc96fe5d2a5 100644 (file)
--- a/lib/cgraph/scan.l
+++ b/lib/cgraph/scan.l
@@ -237,9 +237,8 @@ void aagerror(const char *str)
                if (len > 0) {
                        if (len > 80)
                                len = 80;
-                       agxbprint(&xb, "\nString starting:\"%.*s", (int)len, Sbuf.buf);
+                       agxbprint(&xb, "\nString starting:\"%.*s", (int)len, agxbuse(&Sbuf));
                }
-               agxbclear(&Sbuf);
                break;
        }
        case hstring: {
@@ -248,9 +247,8 @@ void aagerror(const char *str)
                if (len > 0) {
                        if (len > 80)
                                len = 80;
-                       agxbprint(&xb, "\nString starting:<%.*s", (int)len, Sbuf.buf);
+                       agxbprint(&xb, "\nString starting:<%.*s", (int)len, agxbuse(&Sbuf));
                }
-               agxbclear(&Sbuf);
                break;
        }
        case comment :