Added check to use the system or the package wget(1)

This will prevent issues when wget(1) is not installed on the system.

Signed-off-by: Vinicius Ruoso <vkr07@c3sl.ufpr.br>
Signed-off-by: Josiney de Souza <josineys@c3sl.ufpr.br>

integrity-checker.sh

@@ -118,10 +118,16 @@ update_myself(){
         fi
     fi
 
-    http_proxy="${PROXY}" wget --tries=${UPDATETRIES} \
+    if which wget &>/dev/null; then
+        WGETBIN="$(which wget)"
+    else
+        WGETBIN="${PREFIX}/bin/wget"
+    fi
+
+    http_proxy="${PROXY}" ${WGETBIN} --tries=${UPDATETRIES} \
                                      --timeout=${UPDATETIMEOUT} \
-                               --proxy-user=${puid} \
-                               --proxy-password=${ppasswd} \
+                                     --proxy-user="${puid}" \
+                                     --proxy-password="${ppasswd}" \
                                      "${UPDATESERVER}/SEED2-update.run" \
                                      -O "${TMPDIR}/SEED2-update.run" \
                                      &>/dev/null || return 1