Fix error handling in read_file()
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@ -67,7 +67,7 @@ char *read_file(char const * const filename)
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objfile = open(filename, O_RDONLY);
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if (objfile) {
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if (objfile != -1) {
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/* read and copy chunks */
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while ((n = read(objfile, buf, STD_FILE_BUF)) > 0) {
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char *tmp_ptr = NULL;
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