[PATCH 6 of 8 faster-obsmarkers] getbefloat64: drop unnecessary memcpy

[Augie Fackler]

# HG changeset patch
# User Martin von Zweigbergk <martinvonz at google.com>
# Date 1421790379 28800
#      Tue Jan 20 13:46:19 2015 -0800
# Branch stable
# Node ID 22d73e82c50d1126c7640d960cf74fcf328add6c
# Parent  bbd5e20889d06d6dccc8b3e83946d65d0cc79570
getbefloat64: drop unnecessary memcpy

diff --git a/mercurial/util.h b/mercurial/util.h
--- a/mercurial/util.h
+++ b/mercurial/util.h
@@ -199,14 +199,12 @@ static inline void putbe32(uint32_t x, c
 static inline double getbefloat64(const char *c)
 {
 	const unsigned char *d = (const unsigned char *)c;
-	double ret;
 	int i;
 	uint64_t t = 0;
 	for (i = 0; i < 8; i++) {
 		t = (t<<8) + d[i];
 	}
-	memcpy(&ret, &t, sizeof(t));
-	return ret;
+	return *((const double*)&t);
 }
 
 #endif /* _HG_UTIL_H_ */