install.sh: do all sudo stuff before first brew run

Otherwise the user gets prompted for password twice.

Closes #999.

Author: gromgit

install.sh

@@ -1019,22 +1019,22 @@ ohai "Downloading and installing Homebrew..."
     ) || exit 1
   fi
 
+  if [[ -n "${ADD_PATHS_D-}" ]]
+  then
+    execute_sudo "${MKDIR[@]}" /etc/paths.d
+    echo "${HOMEBREW_PREFIX}/bin" | execute_sudo tee /etc/paths.d/homebrew
+    execute_sudo "${CHOWN[@]}" root:wheel /etc/paths.d/homebrew
+    execute_sudo "${CHMOD[@]}" "a+r" /etc/paths.d/homebrew
+  elif [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]
+  then
+    warn "${HOMEBREW_PREFIX}/bin is not in your PATH.
+    Instructions on how to configure your shell for Homebrew
+    can be found in the 'Next steps' section below."
+  fi
+
   execute "${HOMEBREW_PREFIX}/bin/brew" "update" "--force" "--quiet"
 ) || exit 1
 
-if [[ -n "${ADD_PATHS_D-}" ]]
-then
-  execute_sudo "${MKDIR[@]}" /etc/paths.d
-  echo "${HOMEBREW_PREFIX}/bin" | execute_sudo tee /etc/paths.d/homebrew
-  execute_sudo "${CHOWN[@]}" root:wheel /etc/paths.d/homebrew
-  execute_sudo "${CHMOD[@]}" "a+r" /etc/paths.d/homebrew
-elif [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]
-then
-  warn "${HOMEBREW_PREFIX}/bin is not in your PATH.
-  Instructions on how to configure your shell for Homebrew
-  can be found in the 'Next steps' section below."
-fi
-
 ohai "Installation successful!"
 echo