utils/hooks: Fix result of is_module_satisfies() for packages not found.

Previously, the module returned True, even if the package is not installed 
on the system.

Includes a test-case.

This fixes #3428.

PyInstaller/utils/hooks/__init__.py

@@ -490,8 +490,12 @@ class method (e.g., `idontevenknow<1.6,>1.9,!=1.9.6,<2.0a0,==2.4c1`) is
         module_name = requirements_parsed.project_name
         version = get_module_attribute(module_name, version_attr)
 
-    # Compare this version against the version parsed from these requirements.
-    return version in requirements_parsed
+    if not version:
+        # Module does not exist in the system.
+        return False
+    else:
+        # Compare this version against the one parsed from the requirements.
+        return version in requirements_parsed
 
 
 def is_package(module_name):

tests/unit/test_hookutils.py

@@ -15,7 +15,8 @@
 
 from PyInstaller.utils.hooks import collect_data_files, collect_submodules, \
     get_module_file_attribute, remove_prefix, remove_suffix, \
-    remove_file_extension, is_module_or_submodule
+    remove_file_extension, is_module_or_submodule, \
+    is_module_satisfies
 from PyInstaller.compat import exec_python, ALL_SUFFIXES
 
 
@@ -188,6 +189,10 @@ def test_is_module_or_submodule():
     assert not is_module_or_submodule('foo', 'foo.bar')
 
 
+def test_is_module_satisfies_package_not_installed():
+    assert is_module_satisfies('pytest')
+    assert not is_module_satisfies('magnumopus-no-package-test-case')
+
 
 _DATA_BASEPATH = join(TEST_MOD_PATH, TEST_MOD)
 _DATA_PARAMS = [