Fix heap-use-after-free (noticed by libasan)

bapt · bapt · commit 172430250f97 · 2021-05-19T15:28:47.000+02:00
diff --git a/src/parse.c b/src/parse.c
@@ -2378,6 +2378,7 @@ int parsemail(char *mbox,	/* file name */
 #endif
                                     if (charset) {
                                         free(charset);
+					charset = NULL;
                                     }
                                     charsetsave[0] = '\0';
 

Original file line number	Diff line number	Diff line change
`@@ -2378,6 +2378,7 @@ int parsemail(char mbox, / file name */`
`2378`	`2378`	`#endif`
`2379`	`2379`	`if (charset) {`
`2380`	`2380`	`free(charset);`
	`2381`	`+ charset = NULL;`
`2381`	`2382`	`}`
`2382`	`2383`	`charsetsave[0] = '\0';`
`2383`	`2384`