tools/repro-build.sh: do not turn on address-sanitizer by default.

@cdecker reports that this gives warnings on exit; and we can't suppress
them by setting ASAN_OPTIONS within the binary itself, unfortunately.

So for 0.7, disable it by default.  I'll work through the errors for 0.7.1.

Signed-off-by: Rusty Russell <[email protected]>

Author: rustyrussell

tools/repro-build.sh

@@ -123,7 +123,7 @@ $INST $(cut -c66- < /tmp/SHASUMS)
 
 # Build ready for packaging.
 # Once everyone has gcc8, we can use CC="gcc -ffile-prefix-map=$(pwd)=/home/clightning"
-./configure --prefix=/usr --enable-address-sanitizer CC="gcc -fdebug-prefix-map=$(pwd)=/home/clightning"
+./configure --prefix=/usr CC="gcc -fdebug-prefix-map=$(pwd)=/home/clightning"
 # libwally wants "python".  Seems to work to force it here.
 make PYTHON_VERSION=3
 make install DESTDIR=inst/