[PATCH] Avoid bogus gcc warning

[Michael Karcher]

recent gcc/glibc combinations warn about ignoring the fgets() result.
The problem exists on Ubuntu 9.10 with current updates. This "fix" of
the non-problem (as I check ferror() afterwards) should even be a
(negligible) performance optimization.

Signed-off-by: Michael Karcher 
---
 dmi.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dmi.c b/dmi.c
index ca75461..d165e9f 100644
--- a/dmi.c
+++ b/dmi.c
@@ -79,8 +79,8 @@ void dmi_init(void)
    		printf_debug("DMI pipe open error\n");
    		goto out_free;
    	}
-		fgets(answerbuf, DMI_MAX_ANSWER_LEN, dmidecode_pipe);
-		if (ferror(dmidecode_pipe))
+		if (!fgets(answerbuf, DMI_MAX_ANSWER_LEN, dmidecode_pipe) &&
+		    ferror(dmidecode_pipe))
    	{
    		printf_debug("DMI pipe read error\n");
    		pclose(dmidecode_pipe);