Fix uninitialized value warnings.

Bug: 263274255
Test: presubmit; make tidy-build-make_subset
Change-Id: I33c8b0b006732e4351a15774b50036d10ffd26b5
diff --git a/tools/zipalign/ZipFile.cpp b/tools/zipalign/ZipFile.cpp
index f2f65a6..ff15b15 100644
--- a/tools/zipalign/ZipFile.cpp
+++ b/tools/zipalign/ZipFile.cpp
@@ -372,7 +372,7 @@
     status_t result = OK;
     long lfhPosn, startPosn, endPosn, uncompressedLen;
     FILE* inputFp = NULL;
-    uint32_t crc;
+    uint32_t crc = 0;
     time_t modWhen;
 
     if (mReadOnly)