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curl: fix memory leak reading --writeout from file

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If another string had been set first, the writout function for reading
the syntax from file would leak the previously allocated memory.

Reported-by: Brian Carpenter
Fixes #3322
Closes #3330
This commit is contained in:
Daniel Stenberg 2018-11-30 11:59:04 +01:00
parent 8e2549b86c
commit 650281ed5b
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1 changed files with 1 additions and 0 deletions
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src/tool_getparam.c
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@ -2066,6 +2066,7 @@ ParameterError getparameter(const char *flag, /* f or -long-flag */
fname = nextarg; fname = nextarg;
file = fopen(nextarg, FOPEN_READTEXT); file = fopen(nextarg, FOPEN_READTEXT);
} }
Curl_safefree(config->writeout);
err = file2string(&config->writeout, file); err = file2string(&config->writeout, file);
if(file && (file != stdin)) if(file && (file != stdin))
fclose(file); fclose(file);