tests/api.c and tests/api/test_pkcs7.c: fixes for CFLAGS="-Og" --enable-all (PRB-single-flag.txt line 3).

tests/api.c

@@ -18879,7 +18879,7 @@ static int test_wolfSSL_d2i_and_i2d_PublicKey_ecc(void)
     const unsigned char* p;
     unsigned char *der = NULL;
     unsigned char *tmp = NULL;
-    int derLen;
+    int derLen = -1;
     unsigned char pub_buf[65];
     unsigned char pub_spki_buf[91];
     const int pub_len = 65;
@@ -18989,7 +18989,7 @@ static int test_wolfSSL_d2i_and_i2d_DSAparams(void)
     };
     int derInLen = sizeof(derIn);
     byte* derOut = NULL;
-    int derOutLen;
+    int derOutLen = -1;
     byte* p = derIn;
 
     /* Check that params can be successfully decoded. */

tests/api/test_pkcs7.c

@@ -3143,7 +3143,7 @@ int test_wc_PKCS7_GetEnvelopedDataKariRid(void)
     byte rid[256];
     byte cms[1024];
     XFILE cmsFile = XBADFILE;
-    int ret;
+    int ret = -1;
     word32 ridSz = sizeof(rid);
     XFILE skiHexFile = XBADFILE;
     byte skiHex[256];